chinquapinPronunciation: /ˈtʃɪŋkəpɪn/ (also chinkapin)Definition of chinquapin noun a North American chestnut tree. Several species in the family Fagaceae, in particular Castanea pumila the edible nut of the chinquapin. Origin: early 17th century: from Virginia Algonquianchinquapin in other Oxford dictionaries Definition of chinquapin in the US English dictionary