eggbeater

[ eg-bee-ter ]
/ ˈɛgˌbi tər /

noun

a small rotary beater for beating eggs, whipping cream, etc.
Slang. a helicopter.

Origin of eggbeater

An Americanism dating back to 1820–30; egg1 + beater

British Dictionary definitions for egg beater

eggbeater
/ (ˈɛɡˌbiːtə) /

noun

Also called: eggwhisk a kitchen utensil for beating eggs, whipping cream, etc; whisk
mainly US and Canadian an informal name for helicopter