Bull's'-eye, n.

n. 1. (Naut.) An oval wooden block without sheaves, having a groove around it and a hole through it, used for connecting rigging, as the stays.

2. A thick piece of glass inserted in a deck, roof, floor, ship's side, &c., to let in light.
3. Any circular opening for air or light. Weale.
4. (Naut.) A small, obscure cloud, ruddy in the middle, and supposed to portend a storm.
5. (Astron.) Aldebaran, a bright star situated in the eye of Taurus or the Bull.
6. A policeman's lantern, with a thick glass reflector on one side. Dickens.
7. (Archery & Gun.) The center of a target.
8. A thick knob or protuberance left on a sheet of plate-glass by the end of the pipe through which it was blown.
9. A small and thick old fashioned watch. [Amer.]