| 单词 | pinna | 
| 释义 | Word Frequency pinna(ˈpɪnə) nounWord forms:  plural -nae (-niː) or -nas 1.  any leaflet of a pinnate compound leaf  2.  zoology a feather, wing, fin, or similarly shaped part 3.   another name for auricle (sense 2)  Word origin C18: via New Latin from Latin: wing, feather, fin | 
	
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