معنی کلمه :‌ rotation

Any return or succesion in a series.

Pertaining to, or resulting from, rotation; of the nature of, or characterized by, rotation; as, rotational velocity.

1. To cry with a sharp, shrill, prolonged sound, as certain animals do, indicating want, displeasure, or pain. 2. To turn informer; to betray a secret. [Slang] A shrill, somewhat prolonged cry.