rotator

One that rotates.

A muscle that serves to rotate a part of the body.

One who or that which rotates, or causes rotation; any rotational agency or instrument.

Specifically, in anatomy, a muscle that produces a rolling or rotatory motion of a part; a muscle which rotates a part upon its own axis.

In metal-working, a revolving or rotary furnace.

In photometry, a mounting for an incandescent lamp so constructed that the lamp may be given a rapid rotation about its polar axis. By means of such a device the mean horizontal intensity of the lamp may be determined from a single photometric setting.

In mathematics, a quantity having magnitude, direction, and position; a rotor.

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

A revolving reverberatory furnace.

One that rotates.