(transitive, of an object that can be raised or lowered) To lower by winding, as with a crank or windlass. / (transitive, of a device with a mainspring) To unwind.

simple past tense and past participle of water down

Of a collar, able to be buttoned down to the shirt, as over a necktie. / (idiomatic) Serious; staid; businesslike. / (idiomatic) Conservative; conventional; unimaginative.

A shirt with a button-down collar

(US, offensive) Alternative spelling of jew down

(offensive) To bargain or haggle with a seller in order to obtain a lower price for a good or service.

Alternative form of thumbs down

To disapprove with a thumbs-down sign.

To become quiet and calm after a period of disturbance or restlessness. / To establish a settled lifestyle, and especially to marry. / To get comfortable with one's new accommodation or circumstances.

(idiomatic) At the very end of a process or project, especially one with a fast-approaching deadline.