rattlesnake fern
noun
any of several American grape ferns, especially Botrychium virginianium, having clusters of sporangia resembling the rattles of a rattlesnake.
Origin of rattlesnake fern
An Americanism dating back to 1805–15
Words nearby rattlesnake fern
rattlebrained,
rattlehead,
rattlepate,
rattler,
rattlesnake,
rattlesnake fern,
rattlesnake flag,
rattlesnake master,
rattlesnake plantain,
rattlesnake root,
rattlesnake weed