a. Operating with force; compelling; forcing; constraining; resulting from, or enforced by, compulsion. [ R. ] [ 1913 Webster ]

To recover of us, by strong hand
And terms compulsatory, those foresaid lands. Shak. [ 1913 Webster ]

n. [ L. ] 1. A beater; a striker. [ 1913 Webster ]

2. (Mech.) That which beats or throbs in working. [ 1913 Webster ]

a. [ Cf. F. pulsatoire. ] Capable of pulsating; throbbing. Sir H. Wotton. . [ 1913 Webster ]