Sag·it·tar·i·us 
(săj′ĭ-târē-əs)
(săj′ĭ-târē-əs)n.
1. A constellation in the Southern Hemisphere near Scorpius and Capricorn.
2.
a. The ninth sign of the zodiac in astrology.
b. One who is born under this sign. In all senses also called Archer.
[Middle English, from Latin Sagittārius, from sagittārius, archer, from sagitta, arrow.]