| 单词 | sleeper | 
| 释义 | Word Frequency sleeper(ˈsliːpə) noun 1.  a person, animal, or thing that sleeps  2.  a railway sleeping car or compartment  3.  British one of the blocks supporting the rails on a railway track    US and Canadian equivalent: tie4.  a heavy timber beam, esp one that is laid horizontally on the ground 5. mainly British a small plain gold circle worn in a pierced ear lobe to prevent the hole from closing up 6.  a wrestling hold in which a wrestler presses the sides of an opponent's neck, causing them to pass out 7.  US an unbranded calf  8.  Also called: sleeper goby any gobioid fish of the family Eleotridae, of brackish or fresh tropical waters, resembling the gobies but lacking a ventral sucker  9.  informal a person or thing that achieves unexpected success after an initial period of obscurity  10.  a spy planted in advance for future use, but not currently active   | 
	
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