\ ˈstak How to pronounce stack (audio) \

Definition of stack

 (Entry 1 of 2)

1 : a large usually conical pile (as of hay, straw, or grain in the sheaf) left standing in the field for storage
2a : an orderly pile or heap
b : a large quantity or number
3 : an English unit of measure especially for firewood that is equal to 108 cubic feet
4a : a number of flues embodied in one structure rising above a roof
b : a vertical pipe (as to carry off smoke)
c : the exhaust pipe of an internal combustion engine
5a : a structure of bookshelves for compact storage of books usually used in plural
b plural : a section of a building housing such structures
6 : a pile of poker chips
7a : a memory or a section of memory in a computer for temporary storage in which the last item stored is the first retrieved also : a data structure that simulates a stack a push-down stack
b : a computer memory consisting of arrays of memory elements stacked one on top of another


stacked; stacking; stacks

Definition of stack (Entry 2 of 2)

transitive verb

1a : to arrange in a stack : pile
b : to pile in or on stacked the table with books stack the dishwasher
2a : to arrange secretly for cheating stack a deck of cards
b : to arrange or fix so as to make a particular result likely the odds are stacked against us will stack juries to suit themselves— Patrice Horn
3a : to assign (an airplane) by radio to a particular altitude and position within a group circling before landing
b : to put into a waiting line another dozen rigs are stacked up and waiting— P. H. Hutchins, Jr.
4 : compare used with againstsuch a crime is nothing when stacked against a murder— Pete Censky

intransitive verb

: to form a stack

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Other Words from stack


stacker noun

Examples of stack in a Sentence

Noun He had arranged the letters in stacks. She took a magazine from near the top of the stack. Verb She spent the afternoon splitting and stacking firewood. She stacked the plates in the cupboard. He stacked the books on the table. The other players accused him of stacking the deck.
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Recent Examples on the Web: Noun For the new vehicle, the automaker has moved the infotainment screen down from the dash and into the center stack. Roberto Baldwin, Car and Driver, "2021 Mercedes-Benz S-Class Gets Updated Infotainment, 3D Display," 8 July 2020 This stack can’t be modified by attackers and doesn’t store any data. Dan Goodin, Ars Technica, "Intel will soon bake anti-malware defenses directly into its CPUs," 15 June 2020 Compared with the meal-size bounty served at a place like Ashes & Diamonds, the servings aren’t particularly hearty, but the succession makes for a fine afternoon stack. Esther Mobley,, "Flowers Vineyards just opened a stunning new tasting room in Healdsburg. Could it become the Scribe," 7 July 2020 Essentially, experts are trying to find the stack of cheese slices that can keep spread from overwhelming hospitals and minimize disease while creating the fewest disruptions to life. Andrew Joseph, STAT, "No one wants to go back to lockdown. Is there a middle ground for containing Covid-19?," 1 July 2020 Refresh your stack of rings and necklaces with one of Giovanna's easy-to-style pieces. Talia Abbas, Glamour, "4th of July Sales 2020: The 23 Best Fashion & Clothing Deals to Shop This Weekend," 1 July 2020 The political battle over control of Venezuela has turned to a $1 .8 billion stack of gold bars sitting in the Bank of England’s vault in London, where a judge is expected to decide soon on who has the rightful claim to the bullion. Washington Post, "Gold in London bank sparks battle between Venezuelan rivals," 1 July 2020 Connoisseurs say that the best way to enjoy these robust shrimp is steamed or grilled in their shells, accompanied by nothing more than melted butter (OK, maybe garlic butter), a big stack of napkins, and icy cold beverages. Sheri Castle, Southern Living, "Everything You Need to Know About Royal Red Shrimp," 30 June 2020 The company will remove two Starlink satellites from its normal stack inside the payload fairing—bringing the total down to 58—to accommodate the launch of three SkySat imaging satellites for Planet. Eric Berger, Ars Technica, "SpaceX launches its third rocket in two weeks [Updated]," 13 June 2020 Recent Examples on the Web: Verb But does Rick Bowness want to stack his top two lines with those players or distribute them to other lines? Matthew Defranks, Dallas News, "4 roster questions the Stars face heading into training camp: Can Taylor Fedun push for playing time?," 11 July 2020 Meticulous descriptions explain how to use a chainsaw so you won’t get hurt, how to prepare a home against the winter, how to stack logs on a sloping river bank, how to save a drowning man. Tim Parks, The New York Review of Books, "The Novels of Tension Between Freedom and Disaster," 10 July 2020 One will be used to stack NASA's big Space Launch System rocket, and another is presently in use for Northrop Grumman's Omega rocket. Eric Berger, Ars Technica, "NASA’s most iconic building is 55 years old and just getting started," 5 July 2020 One box is about 6 inches tall and is designed to stack easily. Leeron Hoory, Popular Science, "Under-bed storage to maximize the space in your tiny room," 8 Nov. 2019 By layering slices — promoting masks, no theater or concerts, limiting group activities, dining only outside — the idea is to stack enough strategies to cover up the holes left by any one slice and to block the amount of virus that can get through. Andrew Joseph, STAT, "No one wants to go back to lockdown. Is there a middle ground for containing Covid-19?," 1 July 2020 This promotion won’t stack, and is limited to one-time use per customer and account, plus, all your Dewalt products must be purchased in a single order and shipped to a single address to qualify. Chelsea Stone, CNN Underscored, "Tackle home projects with $10 off Dewalt tool orders of $50 or more at Amazon," 3 June 2020 Drug companies typically stack treatments on top of each other to see if a cocktail of therapies work better than just one. Sy Mukherjee, Fortune, "5 companies to keep an eye on following the world’s largest cancer conference," 3 June 2020 If opposing defenses try to stack their front seven up front in an effort to slow down Drake and the Cardinals’ running game, Murray’s wide receivers will be left in single-man coverage and someone’s going to get open. Bob Mcmanaman, azcentral, "Kenyan Drake: Cardinals could 'be a nuisance for everybody in NFC West for years to come'," 26 May 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'stack.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of stack


14th century, in the meaning defined at sense 1


14th century, in the meaning defined at transitive sense 1a

History and Etymology for stack


Middle English stak, from Old Norse stakkr; akin to Russian stog stack and probably to Old English staca stake

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Time Traveler for stack

Time Traveler

The first known use of stack was in the 14th century

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Statistics for stack

Last Updated

1 Aug 2020

Cite this Entry

“Stack.” Dictionary, Merriam-Webster, Accessed 3 Aug. 2020.

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More Definitions for stack


How to pronounce stack (audio)

English Language Learners Definition of stack

 (Entry 1 of 2)

: a usually neat pile : a group of things that are put one on top of the other
: a large amount of something
: a tall chimney on a factory, ship, etc., for carrying smoke away



English Language Learners Definition of stack (Entry 2 of 2)

: to arrange (things) in a stack : to put (things) in a usually neat pile
: to cheat at a card game by arranging (a deck of cards) in a special way
used to describe a situation in which one person, team, etc., is given an advantage over others often in a way that is unfair


\ ˈstak How to pronounce stack (audio) \

Kids Definition of stack

 (Entry 1 of 2)

1 : a neat pile of objects usually one on top of the other
2 : a large number or amount We've got a stack of bills to pay.
3 : a large pile (as of hay) usually shaped like a cone
5 : a structure with shelves for storing books


stacked; stacking

Kids Definition of stack (Entry 2 of 2)

: to arrange in or form a neat pile

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More from Merriam-Webster on stack

Thesaurus: All synonyms and antonyms for stack

Rhyming Dictionary: Words that rhyme with stack

Spanish Central: Translation of stack

Nglish: Translation of stack for Spanish Speakers

Britannica English: Translation of stack for Arabic Speakers

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