1 rock fern | Definition of rock fern

rock fern

noun

Definition of rock fern

: any of various ferns that grow chiefly on or among rocks: such as
b : a finely divided tropical Asiatic and Australasian fern (Cheilanthes tenuifolia) that has been implicated in Australia in an acute intoxication of cattle
c : any of several chiefly tropical ferns of the genus Asplenium