| 单词 | otter down | 
| 释义 | † otter downn. Obsolete. rare.   = eiderdown n. ΘΚΠ society > occupation and work > materials > raw material > other animal raw materials > 			[noun]		 > feathers > type of feathers or down swan's-downa1616 otter down1759 eiderdown1774 ostrich1842 1759    S. Johnson Idler 20 Jan. 17  				Now to be sold..some Duvets for bed-coverings, of down, beyond comparison superior to what is called Otter Down. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online June 2018). < | 
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