a zodiacal constellation in the N hemisphere lying close to Orion and between Aries and Gemini. It contains the star Aldebaran, the star clusters Hyades and Pleiades, and the Crab Nebula
2. astrology
a. Also called: the Bull
the second sign of the zodiac, symbol ♉, having a fixed earth classification and ruled by the planet Venus. The sun is in this sign between about April 20 and May 20