noun
rotator
noun
1
A person or thing that rotates or causes rotation.
"The rotator on the antenna lets you point it in any direction."
2
A muscle that turns a body part, especially at a joint.
"She tore a rotator muscle in her shoulder during the match."
How to Use Rotator
Learner’s notesIn plain EnglishSomething (a device or muscle) that produces rotation — most familiar in "rotator cuff," the group of shoulder muscles.
Common pairings
rotator cuff
Word Forms
rotators plural
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The _____ on the antenna lets you point it in any direction.
Etymology
Built from rotate plus the agent suffix -or.