rock fern

noun

: any of various ferns that grow chiefly on or among rocks: such as

a

: evergreen wood fern sense 1

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

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