giant chinkapin giantc·hin·ka·pin uncommon noun 1. small ornamental evergreen tree of Pacific Coast whose glossy yellow-green leaves are yellow beneath; bears edible nuts Synonymsgiant chinkapingolden chinkapinChrysolepis chrysophyllaCastanea chrysophyllaCastanopsis chrysophylla Related words Broader terms tree Parts Chrysolepis WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.