Filly — Defs

01 n. A female foal or colt; a young mare. Cf. Colt, Foal.

pl. Fillies ((#))

1.
A female foal or colt; a young mare. Cf. Colt, Foal.(Zool.) See: Colt, Foal
“Neighing in likeness of a filly foal.” — Shak.
2.
A lively, spirited young girl.[Colloq.]