(transitive) To turn by means of a crank. / (intransitive) To turn a crank. / (intransitive, of a crank or similar) To turn. / (transitive) To cause to spin via other means, as though turned by a crank.

(informal) An eccentric, crazy or foolish person. / (informal) Someone addicted to crack cocaine (i.e. a drug addict).

(informal) Eccentric or impractical.

A painful contraction of a muscle which cannot be controlled. / That which confines or contracts. / A clamp for carpentry or masonry.

(intransitive) (of a muscle) To contract painfully and uncontrollably. / (transitive) To affect with cramps or spasms. / (transitive, figuratively) To prohibit movement or expression of.

(archaic) cramped; narrow

(idiomatic) To produce in large volumes mechanically or as if by machine.

(vulgar, slang, derogatory) A person addicted to crack cocaine who finances the habit through prostitution. / (vulgar, slang, derogatory, by extension) Any sexually promiscuous or adulterous woman.

(informal) A beauty treatment for men in which hair is removed from the back, from between the buttocks ("crack") and from the scrotum ("sack").

(idiomatic) As good as claims or reputation would suggest.