rock_brake
1. [ noun ] (botany) dwarf deciduous lithophytic ferns
Related terms: fern European_parsley_fern American_rock_brake Cryptogramma
2. [ noun ] (botany) any of several small lithophytic ferns of tropical and warm temperate regions
Synonyms: cliffbrake cliff-brake cliff_brake
Related terms: fern purple_rock_brake coffee_fern bird's-foot_fern Pellaea
3. [ noun ] (botany) chiefly lithophytic or epiphytic fern of North America and east Asia
Synonyms: American_wall_fern Polypodium_virgianum rock_polypody
Related terms: polypody
Similar spelling:   rock_opera
  rock_barnacle