Now is an appropriate time to take a particular action.

A woman having a noble rank, especially one belonging to the peerage; a Lady.

(emphatic) I don't know. / Indicates that the speaker is completely ambivalent about something.

Speaking, promising, or boasting much, but doing little.

(idiomatic) All or nothing. Probably derived from "shoot duck or no dinner".

(aviation) The point in an aircraft's flight when there is insufficient fuel to reverse direction and return to the place of origin.

(UK, informal) The head; the part of the body of an animal or human which contains the brain, mouth and main sense organs. / (UK, informal) The head as the seat of mental capacity or intellect.

(intransitive) To nod repeatedly.

Alternative form of noodle (“improvise musically”).

(vulgar, colloquial, sarcastic, somewhat derogatory) A riposte to someone who has just said something obvious