foal UK /fəʊl/US /foʊl/noun 2verb 1forms 3 noun2 •A young horse or other equine, especially just after birth or less than a year old. •(historical) A young boy who assisted the headsman by pushing or pulling the tub. verb1 •To give birth to (a foal); to bear offspring.All the time, our overfraught hearts are beating at a rate that would far outstrip the fastest gallop of the fastest horses ever foaled. — 1859 formsfoaled · foaling · foals