musculus

Etymology
, diminutive of.

Noun

 * 1)  A muscle.

Etymology
From. The sense is a.

Noun

 * : a small mouse
 * 1) a companion of the whale
 * 2) a saltwater mussel
 * 3)  a muscle
 * 4)  a shed, mantelet, shielding
 * 1)  a shed, mantelet, shielding