biceps

The leg is bent by the action of the flexor muscles situated on the back of the thigh, the chief of these being called the biceps of the leg.

The arm muscles are the show muscles of the physique. When someone asks to "see your muscles," they are most likely referring to your arms, and more specifically, your biceps.

Today, Stonewall's flexed biceps measure 18 inches around.

Also it is advisable to distinguish this ( ˘ ˘ ) — ˘ ˘ — rhythm, where the princeps was probably shorter in duration than the biceps (as in the dactylic hexameter), from true (marching) anapaests, in which they were equal.