beat

1. To agitate an ingredient or a mixture by vigorously turning it over and over with an upward motion, in order to introduce air, using a spoon, fork, whisk, or electric mixer.

2. Raw meat is beaten by hitting it briskly all over the surface to break down the fibres and make it more tender when cooked.

To stir rapidly in a circular motion. Generally, 100 strokes by hand equals about 1 minute by electric mixer.