Meaning

noun any skeletal muscle having two origins (but especially the muscle that flexes the forearm)

originEtymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwís Proto-Italic *dwis Old Latin duis Latin bis Proto-Indo-European *kap- Proto-Indo-European *káput Proto-Italic *kaput Proto-Indo-European *ís Proto-Italic *is Proto-Italic *-kaput-isder. Old Latin -cipesder. Latin -ceps Latin bicepsder. English biceps Derived from Latin biceps (“double-headed, two-peaked”), from bis (“twice”) +…

Etymology from Wiktionary, CC BY-SA 3.0