grape fern gra·pe·fern uncommon noun 1. a fern of the genus Botrychium having a fertile frond bearing small grapelike clusters of spore cases Synonymsgrape fern Related words Broader terms fern Narrower terms moonwortdaisyleaf grape fernleathery grape fernrattlesnake fern Parts Botrychium WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
