n. 1 a archaic or poet girl; young unmarried woman. b (attrib.) unmarried (maiden aunt). 2 = MAIDEN OVER. 3 (attrib.) (of a female animal) unmated. 4 (often attrib.) a horse that has never won a race. b race open only to such horses. 5 (attrib.) first (maiden speech; maiden voyage). maidenhood n. maidenly adj. [Old English]