What is the meaning of Crook?

A bend; turn; curve; curvature; a flexure.

A bending of the knee; a genuflection.

A bent or curved part; a curving piece or portion (of anything).

A lock or curl of hair.

A support beam consisting of a post with a cross-beam resting upon it; a bracket or truss consisting of a vertical piece, a horizontal piece, and a strut.

A specialized staff with a semi-circular bend (a "hook") at one end used by shepherds to control their herds.

A bishop's standard staff of office.

An artifice; a trick; a contrivance.

A person who steals, lies, cheats or does other dishonest or illegal things; a criminal.

A pothook.

A small tube, usually curved, applied to a trumpet, horn, etc., to change its pitch or key.

To bend, or form into a hook.

To become bent or hooked.

To turn from the path of rectitude; to pervert; to misapply; to twist.

Bad, unsatisfactory, not up to standard.

Ill, sick.

Annoyed, angry; upset.

Alternative form of croken

Source: wiktionary.org