rock brake

1 definition found

rock brake - WordNet (r) 2.1 (2005) :

  rock brake
      n 1: any of several small lithophytic ferns of tropical and warm
           temperate regions [syn: cliff brake, cliff-brake, rock brake
           ]
      2: dwarf deciduous lithophytic ferns
      3: chiefly lithophytic or epiphytic fern of North America and
         east Asia [syn: rock polypody, rock brake, American wall   fern
         , Polypodium virgianum]