capricorn -
n. (also
Capricornus)
1 a constellation, traditionally regarded as contained in the
figure of a goat's horns.
2 a the tenth sign of the zodiac (the Goat). b a person born
when the sun is in this sign.
Capricornian n. & adj. [ME f. OF capricorne f. L capricornus f. caper -pri goat + cornu horn]