| 单词 | oak fern |
| 释义 | oak fern a small woodland fern, Gymnocarpium dryopteris, of northern regions, having triangular, pinnate fronds that slant horizontally. [1540-50; trans. of L dryopteris < Gk dryopterís, equiv. to dryo- (comb. form of drys oak) + ptéris fern] |
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