noun the center of a target.
2. bull's-eye ·noun a small and thick old-fashioned watch.
3. bull's-eye ·noun a circular or oval opening for air or light.
4. bull's-eye ·noun aldebaran, a bright star in the eye of taurus or the bull.
5. bull's-eye ·noun a small round cloud, with a ruddy center, supposed by sailors to portend a storm.
6. bull's-eye ·noun a thick knob or protuberance left on glass by the end of the pipe through which it was blown.
7. bull's-eye ·noun a small thick disk of glass inserted in a deck, roof, floor, ship's side, ·etc., to let in light.
8. bull's-eye ·noun a lantern, with a thick glass lens on one side for concentrating the light on any object; also, the lens itself.
9. bull's-eye ·noun a small circular or oval wooden block without sheaves, having a groove around it and a hole through it, used for connecting rigging.