1.
biceps; biceps muscle
The large muscle on the front of the upper arm that flexes the elbow; the biceps. An anatomical term that is also common in fitness contexts.
上腕二頭筋を鍛える。
Train the biceps.
腕を曲げると上腕二頭筋が盛り上がる。
When you bend your arm, the biceps bulges.
重いものを持ち上げる動作では、上腕二頭筋が大きく働く。
In the motion of lifting heavy objects, the biceps works hard.
上腕 (upper arm) + 二頭 (two-headed) + 筋 (muscle). The muscle you flex to make a "muscle bump."
COMMON COLLOCATIONS:
- 上腕二頭筋を鍛える: to train the biceps
- 力こぶ: the bulge of a flexed biceps (colloquial)
SIMILAR WORDS:
- 上腕三頭筋: triceps — the muscle on the back of the upper arm