Definition of triceps noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈtraɪseps//
; NAmE NAmE//ˈtraɪseps//
(pl. triceps) Skeleton and muscles
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the large muscle at the back of the top part of the arm compare biceps See related entries: Skeleton and muscles Word Originlate 16th cent.: from Latin, literally ‘three-headed’, from tri- ‘three’ + -ceps (from caput ‘head’).
See the Oxford Advanced American Dictionary entry: triceps