Definition of crank:
(n) :
an
ill-tempered or
nasty person; a
bent piece of an
axle, or
shaft, or an arm attached
at right angles to the end of a shaft or wheel, used to
impart a circular action to a wheel or other mechanical device and create power; also used to change circular into reciprocating motion, or reciprocating into circular motion
"billy-Bob is a nasty, old crank! He chased my cat away."
(v) :
to turn a crank; to cause to spin via other means, as though turned by a crank
"crank it up!"