rough-winged swallow 
(rŭfwĭngd′)
(rŭfwĭngd′)n.
Either of two swallows (Stelgidopteryx serripennis or S. ruficollis) of the Americas, having outer primary feathers equipped with small barblike hooks.
| 单词 | rough-winged swallow |
| 释义 | rough-winged swallow (rŭfwĭngd′)n. Either of two swallows (Stelgidopteryx serripennis or S. ruficollis) of the Americas, having outer primary feathers equipped with small barblike hooks. |
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