eggbeater

noun

1. A kitchen utensil that uses rotating blades to beat eggs.
2. (dated, possibly, uncommon)A (wire) whisk.

   “With a wire eggbeater, lower the oysters into this three or four at a time.”

   “Bleeding.—Bleeding for therapuetic sera are made with trocar and rubber tube into 2-liter Erlenmeyer flasks having a large flat wire eggbeater to support the clot. After the flask is about half-full, it is tilted on the side where the wire is inserted.”

   “Taking advantage of the fact that a wire eggbeater of the type shown [pictured: a flat whisk] is so easily fastened between a camera tilt-head and the tripod, one photographer used such a beater to steady his camera […]”

3. A swimming stroke involving alternating kicks.
4. (slang)A helicopter.

   “He scanned the horizon to the south, searching in vain for the eggbeater.”

5. (slang)An outboard motor.