What is (a) Aries, the sign of the zodiac which the sun enters about the 21st of March. (b) The constellation Aries, which does not now, as formerly, occupy the sign of the same name called?

ram — (Astron.) (a) Aries, the sign of the zodiac which the sun enters about the 21st of March. (b) The constellation Aries, which does not now, as formerly, occupy the sign of the same name. (Webster's 1913.)