Definition of "chinquapin"

Any of certain species of tree in the chestnut genus Castanea:

1. Allegheny chinkapin (Castanea pumila)  examples

2. Ozark chinkapin (Castanea ozarkensis)  examples

3. Chinese chinkapin (Castanea henryi)  examples

Any in the genus Castanopsis of trees.  examples

Any in the genus Chrysolepis of trees and shrubs.  examples

Quercus muehlenbergii, a tree whose leaves resemble those of chestnut-genus chinquapins.  examples

A water chinquapin, an aquatic plant of species Nelumbo lutea, American lotus.  examples

A redear sunfish, a freshwater fish of the southeastern US (Lepomis microlophus).  examples