The Collaborative International Dictionary of English v.0.48:
Ferny \Fern"y\, a. 1. Abounding in ferns. [1913 Webster] 2. resembling a fern; fernlike. [PJC]WordNet (r) 3.0 (2006):
ferny adj 1: abounding in or covered with ferns; "the ferny undergrowth" [syn: ferned, ferny] [ant: fernless] 2: resembling ferns especially in leaf shape; "the ferny shadows of locust leaves" [syn: fernlike, ferny]