noun sick; infirm.
2. crank ·noun any bend, turn, or winding, as of a passage.
3. crank ·noun a sick person; an invalid.
4. crank ·noun full of spirit; brisk; lively; sprightly; overconfident; opinionated.
5. crank ·noun a twist or turn of the mind; caprice; whim; crotchet; also, a fit of temper or passion.
6. crank ·noun a twist or turn in speech; a conceit consisting in a change of the form or meaning of a word.
7. crank ·noun to run with a winding course; to double; to crook; to wind and turn.
8. crank ·noun 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.
9. crank ·noun a person full of crotchets; one given to fantastic or impracticable projects; one whose judgment is perverted in respect to a particular matter.
10. crank ·noun 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.