noun
: a rock brake ( Pellaea ornithopus ) of the Pacific coast of No. America having some of the lower pinnules replaced by secondary pinnae each consisting of three sessile pinnules arranged so as to suggest a bird's foot
noun
: a rock brake ( Pellaea ornithopus ) of the Pacific coast of No. America having some of the lower pinnules replaced by secondary pinnae each consisting of three sessile pinnules arranged so as to suggest a bird's foot
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012