\ˈflask, ˈfläsk\

Definition of flask 

: a container often somewhat narrowed toward the outlet and often fitted with a closure: such as

a : a broad flattened necked vessel used especially to carry an alcoholic beverage on the person

b British : thermos

Examples of flask in a Sentence

Recent Examples on the Web

The BeFree models look like typical soft-flask water bottles, crafted out of tough, flexible plastic with quick-sip tops. Ariella Gintzler, Outside Online, "Katadyn Launches Gravity BeFree Water Filter," 5 June 2018 Jack’s grandfather, who is very much a drunk, grumbles into the waiting room and offers Jack’s dad a swig of his flask. Candice Frederick, Harper's BAZAAR, "This Is Us Season 3 Episode 4 Finally Introduces Jack's Brother Nicky," 17 Oct. 2018 The owners select those themes based on what’s popular; for example, bottle collecting, which includes a variety of categories, such as historic flasks. Sheryl Devore, Lake County News-Sun, "Grayslake antique market doubles in size for summer," 25 June 2018 In March, the designer Karim Rashid introduced Hip, a refillable curvy flask made of BPA-free material ($19.99). New York Times, "Trends in Design and Home Furnishings," 8 May 2018 This isn’t the first time Rih has worn a flask to an event. Sarah Spellings, The Cut, "Rihanna Wore a Flask to Coachella," 17 Apr. 2018 According to prosecutors, Detroit police witnessed Davis slurring his speech and found a flask in the front cup holder of his truck. Marc Daalder, Detroit Free Press, "Wayne County Sheriff reservist facing charges in death of motorcyclist," 26 June 2018 Camper’s Secret Keep your wine the perfect temperature on the go with this insulated flask that’s big enough for the whole bottle. Sunset, "10 Must-Have Wine Accessories," 22 Jan. 2018 When the filter flask is empty, the whole thing folds flat, taking up minimal room in a pack. Ariella Gintzler, Outside Online, "Katadyn Launches Gravity BeFree Water Filter," 5 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'flask.' 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 flask

1549, in the meaning defined above

History and Etymology for flask

Middle French flasque powder flask, ultimately from Late Latin flascon-, flasco bottle, probably of Germanic origin; akin to Old High German flaska bottle

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Statistics for flask

Last Updated

10 Dec 2018

Look-up Popularity

Time Traveler for flask

The first known use of flask was in 1549

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More Definitions for flask



English Language Learners Definition of flask

: a container that is shaped like a flattened bottle and that is used to carry alcohol

: a glass bottle used in scientific laboratories


\ˈflask \

Kids Definition of flask

: a container like a bottle with a flat or rounded body


\ˈflask \

Medical Definition of flask 

(Entry 1 of 2)

: a container often somewhat narrowed toward the outlet and often fitted with a closure: as

a : any of various usually blown-glass vessels used for technical purposes in a laboratory

b : a metal container in which the materials used to form a dental restoration (as a denture) are processed

Medical Definition of flask (Entry 2 of 2)

: to place (a denture) in a flask for processing

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More from Merriam-Webster on flask

Rhyming Dictionary: Words that rhyme with flask

Spanish Central: Translation of flask

Nglish: Translation of flask for Spanish Speakers

Britannica English: Translation of flask for Arabic Speakers

Comments on flask

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a soft lustrous wool fabric with mohair

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