Etymology
Advertisement

biceps

1630s (adj.) "two-headed," specifically in anatomy, "having two distinct origins," from Latin biceps "having two parts," literally "two-headed," from bis "double" (see bis-) + -ceps, combining form of caput "head" (from PIE root *kaput- "head"). As a noun meaning "biceps muscle of the arm," from 1640s, so called for its structure. Despite the -s, it is singular, and classicists insist there is no such word as bicep.

updated on August 21, 2017

Advertisement
Advertisement
Definitions of biceps from WordNet

biceps (n.)
any skeletal muscle having two origins (but especially the muscle that flexes the forearm);
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.