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.
[1913 Webster]