From Longman Dictionary of Contemporary Englishbicepbi‧cep /ˈbaɪsep/ noun [countable usually plural] HBHthe large muscle on the front of your upper arm He had an eagle tattoo on one of his biceps.
Examples from the Corpus
bicep• The pack is rolled into the sleeve of his white shirt on a thick filmy bicep.• She slammed the gate across - surprisingly lithe, her bicep bunching - and hit the button for the third floor.• He then had an assistant place the sword against his bicep and put his weight on it.• If anyone sees me flexing my bicep, my cover s ruined.• The passenger in the car fired three shots, with one hitting the victim in his right bicep.Origin bicep (1600-1700) Modern Latin biceps, from Latin, “two-headed”, from caput “head”; because it is attached in two places 