‖n. [ L., literally, an archer, fr. sagittarius belonging to an arrow, fr. sagitta an arrow. ] (Astron.) (a) The ninth of the twelve signs of the zodiac, which the sun enters about November 22, marked thus [ &sagittarius_; ] in almanacs; the Archer. (b) A zodiacal constellation, represented on maps and globes as a centaur shooting an arrow. [ 1913 Webster ]