genus Halocarpus ge·nus·ha·locarpus uncommon noun 1. dioecious trees or shrubs of New Zealand; similar in habit to Dacrydium SynonymsHalocarpusgenus Halocarpus Related words Broader terms gymnosperm genus Parts Podocarpaceae Part of tarwood WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.