What is "librae"

Libra \Li"bra\ (l[imac]"br[.a]), n.; pl. Libr[ae] (l[imac]"br[=e]). [L., a balance.] (Astron.) (a) The Balance; the seventh sign in the zodiac, which the sun enters at the autumnal equinox in September, marked thus [libra] in almanacs, etc. (b ) A southern constellation between Virgo and Scorpio.

See libra