back·​side | \ ˈbak-ˌsīd How to pronounce backside (audio) \

Definition of backside

1 informal

a : the part of the body that a person sits on : buttocks I slid down on my backside, heaving or rowing myself with my arms and using my good leg for steering …— Oliver Sacks
b : the part of the body of a four-legged animal corresponding to the buttocks : rump sense 1a … admits she hit the dog's backside but denies hitting it on the head.— Ann Krueger
2 or back side : the side or surface opposite the front or face of something : the farthest or reverse side : back A tight, rocky couloir drops down the backside of the peak …— Mike Beaudry The guy with the clipboard pulled me over, pointed to an innocuous little knob on the back side of the engine and said it's part of the computer and needs to be replaced.— Tom and Ray Magliozzi

3 or back side

a : the side opposite the homestretch on a racecourse : backstretch When challenged on the backside the final time around, Tudor Palm would have no part of it, and burst to the lead again.— Jackie Burke
b : the part of a playing field or court (as in football or basketball) that is away from where the main action or play is occurring often used before another noun a backside tackle
c : the final 9 holes of an 18-hole golf course The duo had a little trouble on the backside, though, as they bogeyed the par-3 11th hole.— Brian Girasoli

Keep scrolling for more

Examples of backside in a Sentence

our backsides were sore after sitting on those hard benches for so long

Recent Examples on the Web

In Saturday’s 45-21 victory over Florida Atlantic, Fields took the first snap of his second possession from under Myers’ backside. Nathan Baird,, "How Ohio State’s offense could benefit from additional snaps under center," 4 Sep. 2019 Even toddlers learn the sport in Korea, pressing their backsides against each other and then using their legs to force the other toddler out of the ring — like sumo, only behind-to-behind rather than belly-to-belly. John Leland, New York Times, "Mr. Kim’s Lonely Fight to Preserve a Korean Tradition," 30 Aug. 2019 They’re not just sort of passive bundles of material that are hanging off their backsides. Brian Barrett, WIRED, "A Feline Anatomy Expert Weighs In on That Cats Trailer," 18 July 2019 In another paper recently published in the Proceedings of the Royal Society B, researchers describe a new shipworm, Lithoredo abatanica, that eats rocks instead of wood—and then excretes sand from its backside. Jason Daley, Smithsonian, "These Two Newly Described Worms Have Really Strange, Yet Marvelous Butts," 21 June 2019 Bianca restretched her sleeveless sheath dress around her shapely backside and sat down at the restaurant table. Lucinda Rosenfeld, Harper's magazine, "First Daughters," 10 Feb. 2019 The fan caught Arenado’s homer in his glove and then fell hard on his backside. Patrick Saunders, The Denver Post, "Rockies’ Nolan Arenado wowed by fan’s catch of his home run," 4 Sep. 2019 But after getting a slight chuckle at Durant ending up on his backside, this turns right back into a slaughter that was somehow still PG in rating. Khadrice Rollins,, "Eight Things That Made Kevin Durant’s Rucker Park Mixtape Legendary," 2 Aug. 2019 Baker also gave fullback Chandler Cox a good hit, stopping the rookie for a reception at the line of scrimmage by putting him on his backside. Omar Kelly,, "Dolphins training camp day 5: Stock up, stock down and other observations," 30 July 2019

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

See More

First Known Use of backside

14th century, in the meaning defined at sense 2

Keep scrolling for more

Learn More about backside

Statistics for backside

Last Updated

13 Oct 2019

Look-up Popularity

Time Traveler for backside

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

See more words from the same century

Keep scrolling for more

More Definitions for backside



English Language Learners Definition of backside

informal : the part of the body that a person sits on


back·​side | \ ˈbak-ˌsīd How to pronounce backside (audio) \

Kids Definition of backside

1 : rump sense 1 … the black pup came toward her, his fat backside swinging as he trotted …— Jean Craighead George, Julie of the Wolves
2 : the part of the body on which a person sits


back·​side | \ -ˌsīd How to pronounce backside (audio) \

Medical Definition of backside

: buttocks often used in plural

Keep scrolling for more

More from Merriam-Webster on backside

Rhyming Dictionary: Words that rhyme with backside

Thesaurus: All synonyms and antonyms for backside

Spanish Central: Translation of backside

Nglish: Translation of backside for Spanish Speakers

Britannica English: Translation of backside for Arabic Speakers

Comments on backside

What made you want to look up backside? Please tell us where you read or heard it (including the quote, if possible).


a topic to which one constantly reverts

Get Word of the Day daily email!

Test Your Vocabulary

Where in the World? A Quiz

  • peter bruegel tower of babel painting
  • What language does pajama come from?
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!