| 单词 | rough-winged swallow |
| 释义 | rough-winged swallow /ruf"wingd'/ 1. either of two New World swallows of the genus Stelgidopteryx, having outer primary feathers with small barblike hooks on the margins. 2. any of several African swallows of the genus Psalidoprocne, having similar feathers. [1830-40, Amer.] |
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