Definify.com
Webster 1913 Edition
Aries
‖
A′ri-es
,p
rop.
 Noun.
 [L.] 
1. 
(Astron.) 
(a) 
The Ram; the first of the twelve signs in the zodiac, which the sun enters at the vernal equinox, about the 21st of March. 
(b) 
A constellation west of Taurus, drawn on the celestial globe in the figure of a ram. 
2. 
(Rom. Antiq.) 
A battering-ram. 
Webster 1828 Edition
Aries
A'RIES
,Noun.
 The ram, a constellation of fixed stars, drawn on the globe, in the figure of a ram.  It is the first of the twelve signs in the zodiac, which the sun enters about the 21st of March.