Oxford Dictionary English foal nounnoun BrE BrE//fəʊl// ; NAmE NAmE//foʊl// Equine sports Add to my wordlistjump to other resultsa very young horse or donkey See related entries: Equine sports Word OriginOld English fola, of Germanic origin; related to Dutch veulen and German Fohlen, also to filly.Idioms in foal Add to my wordlistjump to other results(of a female horse) pregnantSee foal in the Oxford Advanced American DictionaryCheck pronunciation: foal oxfordlearnersdictionaries.com