Rotator

·noun A revolving reverberatory furnace.

II. Rotator ·noun that which gives a rotary or rolling motion, as a muscle which partially rotates or turns some part on its axis.

rotator
rŏtātor, ōris, m. [roto], one who turns a thing round in a circle , a whirler round : Bassaridum ...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.