[n] a young female horse under the age of four
Related Terms
babe, baby, biddy, bitch, bossy, broad, brood mare, charger, chick, colleen, colt, courser, cow, critter, cutie, dame, damoiselle, damsel, demoiselle, dobbin, doe, doll, entire, entire horse, equine, ewe, ewe lamb, foal, frail, gal, gelding, girl, girlie,
Misc. Definitions
\Fil"ly\, n.; pl. {Fillies}. [Cf. Icel. fylia, fr. foli foal. See {Foal}.]
1. (Zo["o]l.) A female foal or colt; a young mare. Cf. {Colt}, {Foal}. Neighing in likeness of a filly foal. --Shak.
2. A lively, spirited young girl. [Colloq.] --Addison.