rotator

[ roh-tey-ter or, esp. British, roh-tey- ]
/ ˈroʊ teɪ tər or, esp. British, roʊˈteɪ- /

noun, plural ro·ta·tors for 1, 3, ro·ta·tor·es [roh-tuh-tawr-eez, -tohr-] /ˌroʊ təˈtɔr iz, -ˈtoʊr-/ for 2.

a person or thing that rotates.
Anatomy. a muscle serving to rotate a part of the body.
Nautical. a bladed device streamed to rotate in the water to actuate a patent log.

Origin of rotator

1670–80; < Latin rotātor, equivalent to rotā(re) (see rotate1) + -tor -tor

British Dictionary definitions for rotatores

rotator
/ (rəʊˈteɪtə) /

noun

a person, device, or part that rotates or causes rotation
anatomy any of various muscles that revolve a part on its axis

Medical definitions for rotatores

rotator
[ rōtā′tər ]

n.

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