Main Entry: mus·cle

Pronunciation: \ˈməs-əl\

Function: noun

Usage: often attrib

1 : a body tissue consisting of long cells that contract when stimulated and produce motion—see cardiac muscle, smooth muscle, striated muscle
2 : an organ that is essentially a mass of muscle tissue attached at either end to a fixed point and that by contracting moves or checks the movement of a body part—see agonist 1, antagonist a, synergist 2

[muscle illustration]