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biceps

American  
[bahy-seps] / ˈbaɪ sɛps /

noun

Anatomy.

plural

bicepses, biceps

  1. either of two flexor muscles, one biceps brachii located in the front of the upper arm and assisting in bending the arm, and the other biceps femoris located on the back of the thigh and assisting in bending the leg.

biceps British  
/ ˈbaɪsɛps /

noun

  1. anatomy any muscle having two heads or origins, esp the muscle that flexes the forearm

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
biceps Scientific  
/ bī′sĕps′ /

  1. Either of two muscles, biceps brachii of the arm or biceps femoris of the leg, each with two points of origin. The biceps of the arm bends the elbow, while the biceps of the leg helps to bend the knee as part of the hamstring.

Etymology

Origin of biceps

1625–35; < Latin: two-headed, having two parts, equivalent to bi- bi- 1 + -ceps (stem -cipit- ), combining form of caput head

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In one memorable photo, Trump’s ankles appear downright sausagelike, impressively achieving a diameter that can, I think, realistically rival Hulk Hogan’s biceps.

From Slate • Jul. 18, 2025

And then there’s Ilona Maher — Olympic rugby player, nurse and proud owner of biceps that could crack a crab leg on sight.

From Salon • Jun. 18, 2025

Mom Terri Irwin was helpful because, he said, she “actually did bodybuilding! She had more biceps then than I’ll ever have!”

From Los Angeles Times • Apr. 3, 2025

The La Liga club named a 19-man travelling squad for the trip to Merseyside and there was no place for Vinicius Jr after he suffered "an injury to the biceps femoris in his left leg".

From BBC • Nov. 25, 2024

In the science fiction movie, he had biceps as thick as fireplace logs and used them to swat off evil droids.

From "The Sky at Our Feet" by Nadia Hashimi

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.