A young female horse under the age of four.

Roget 271: carrier, porter, bearer, tranter^†, conveyer; cargador^†; express, expressman; stevedore, coolie; conductor, locomotive, motor.    beast, beast of burden, cattle, horse, nag, palfrey, Arab^†, blood horse, thoroughbred, galloway^†, charger, courser, racer, hunter, jument^†, pony, filly, colt, foal, barb, roan, jade, hack, bidet, pad, cob, tit, punch, roadster, goer^†; racehorse, pack horse, draft horse, cart horse, dray horse, post horse; ketch; Shetland pony, shelty, sheltie; garran^†, garron^†; jennet, genet^†, bayard^†, mare, stallion, gelding; bronco, broncho^†, cayuse [U.S.]; creature, critter [U.S.]; cow pony, mustang, Narraganset, waler^†; stud.    Pegasus, Bucephalus, Rocinante.    ass, donkey, jackass, mule, hinny; sumpter horse, sumpter mule; burro, cuddy^†, ladino [U.S.]; reindeer; camel, dromedary, llama, elephant; carrier pigeon.    [object used for carrying] pallet, brace, cart, dolley; support etc. 215; fork lift.    carriage etc. (vehicle) 272; ship etc. 273.    ... show more

Dutch: merrieveulen
Polish: źrebica