a bent portion of an axle, or shaft, or an arm keyed at right angles to the end of a shaft, by which motion is imparted to or received from it; also used to change circular into reciprocating motion, or reciprocating into circular motion. see bell crank.-any bend, turn, or winding, as of a passage.-a twist or turn in speech; a conceit consisting in a change of the form or meaning of a word.-a twist or turn of the mind; caprice; whim; crotchet; also, a fit of temper or passion.-a person full of crotchets; one given to fantastic or impracticable projects; one whose judgment is perverted in respect to a particular matter.-a sick person; an invalid.-sick; infirm.-liable to careen or be overset, as a ship when she is too narrow, or has not sufficient ballast, or is loaded too high, to carry full sail.-full of spirit; brisk; lively; sprightly; overconfident; opinionated.-to run with a winding course; to double; to crook; to wind and turn.