noun

• (obsolete, UK, universities) A small portion of bread or beer; the quantity bought with a farthing or half farthing and noted with a q (for Latin quadrāns (“farthing”)) in the buttery books.

noun

• (electronics, computing) A marker or signal that triggers something, such as the start of an audio recording.
• (obsolete) Humour; temper of mind.

verb

• (by extension) To spark or provoke.
  "These techniques can cue an open dialogue with your interviewer."

noun

• (sports, billiards, snooker, pool) A straight tapering stick used to hit the balls in various games.
• (obsolete) The tail; the end of a thing; especially, a tail-like twist of hair worn at the back of the head; a queue.
  "Fat, short, radiant, General Chattesworth—in full, artillery uniform—was there, smiling, and making little speeches to the ladies, and bowing stiffly from his hips upward—his great cue playing all the time up and down his back, and sometimes so near the ground when he stood erect and threw back his head, that Toole, seeing Juno eyeing the appendage rather viciously, thought it prudent to cut her speculations short with a smart kick."