from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Any of various ferns of the genus Nephrolepis, including the Boston fern, having long, narrow fronds.
  • noun Any of various ferns of the genus Polystichum, especially P. munitum, native to western North America and having long, dark green fronds.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun any of several tropical ferns having more or less sword-shaped fronds including one from which the Boston fern developed


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