| 单词 | hypoptilum | 
| 释义 | > as lemmashypoptilum Categories » 							 						  hypoptilum  n.  Brit.  , U.S.  				 [Greek πτίλον feather]			 Ornithology the subsidiary shaft or plume of a feather, which springs from the main stem at the junction of quill and rachis; the after-shaft, the hyporachis.< as lemmas  | 
	
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