| 单词 | anchor frost | 
| 释义 | > as lemmasanchor frost   anchor frost  n. chiefly English regional and U.S. ice formed below the surface of a body of water, esp. at the bottom of a stream or river, or on the seabed; cf. anchor ice n. ΘΚΠ the world > the earth > water > ice > body of ice > 			[noun]		 > at bottom of lake, river, etc. > clogging mill-wheel anchor frost1793 1793    Monthly Rev. Oct. 238  				I remember the case being mentioned in the northern States of America, under the denomination of an anchor-frost, from its freezing from the bottom upward. 1867    G. J. Whyte-Melville in  Fortn. Rev. Nov. 588  				Bright enough to thaw an anchor-frost on the mill-wheel. 1913    Lowell 		(Mass.)	 Sun 11 Feb. 9/6  				The dreaded ‘anchor frost’ that works destruction to all the young seed [i.e. young oysters] is feared. 1994    Providence 		(Rhode Island)	 Jrnl.-Bull. 		(Nexis)	 21 Oct. 1 c  				Oysters can be killed by ice or anchor frost, which freezes the zone that dries between tides. < as lemmas  | 
	
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