(US, idiomatic) A state of torturous delirium, particularly delirium tremens.

An outdoor children's game in which participants try to maintain hold of hands as random movements by the leader at the head of the line increase the force at the tail, as with the end of a whip.

(figuratively) To make harsh demands in a position of leadership.

Alternative form of crack-the-whip

With the utmost haste.

(idiomatic) To attempt to get work or money from someone who is too weak or poor to provide it. / (UK, Australia, obsolete, idiomatic) To practice extreme parsimony.

(simile) Very intelligent.

(Canada, US, informal) Very intelligent.

Alternative form of whippoorwill (Antrostomus vociferus)

The hand in which a horse rider holds the whip. / (idiomatic) An advantage over another; the dominant position.