prin·cess / ˈprinsəs; ˈprinˌses; prinˈses/ • n. the daughter of a monarch. ∎ a close female relative of monarch, esp. a son's daughter. ∎ the wife or widow of a prince. ∎ the female ruler of a small state, actually, nominally, or originally subject to a king or emperor. ∎ inf. a spoiled or arrogant young woman.