Definition of "Crank" :

noun: a hand tool consisting of a rotating shaft with parallel handle

noun: an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant

noun: a whimsically eccentric person

noun: a bad-tempered person

verb: bend into the shape of a crank

verb: fasten with a crank

verb: rotate with a crank

verb: start by cranking

"Crank up the engine."

verb: travel along a zigzag path

adjective: (used of boats) inclined to heel over easily under sail