narrow-leaved spleenwort nar·row·lea·vedspleenwort uncommon noun 1. North American fern with narrow fronds on yellowish leafstalks Synonymssilvery spleenwortglade fernnarrow-leaved spleenwortAthyrium pycnocarponDiplazium pycnocarpon Related words Broader terms fern Parts Athyrium WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
