biceps
/ˈbaɪseps/noun
(复同单)
1- any of several muscles having two points of attachment at one end, in particular二头肌, 尤指：
1.1
- （亦作biceps brachii /ˈbreɪkɪaɪ/ ）a large muscle in the upper arm which turns the hand to face palm uppermost and flexes the arm and forearm肱二头肌：
he clenched his fist and exhibited his bulging biceps.
他攥紧拳头, 露出突起的臂部肌肉。
1.2
- （亦作biceps femoris /fɪˈmɔːrɪs/ 或leg biceps）Anatomy a muscle in the back of the thigh which helps to flex the leg【剖】股二头肌。
词源
mid 17th cent.: from Latin, literally 'two-headed', from bi- 'two' + -ceps （from caput 'head'）.