(astrology) a circular diagram representing the 12 zodiacal constellations and showing their signs | the first sign of the zodiac which the sun enters at the vernal equinox; the sun is in this sign from about March 21 to April 19 |
a belt-shaped region in the heavens on either side to the ecliptic; divided into 12 constellations or signs for astrological purposes | a small zodiacal constellation in the Northern Hemisphere; between Pisces and Taurus |
| (astrology) a person who is born while the sun is in Aries |