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[thresh-er] /ˈθrɛʃ ər/
a person or thing that threshes.
Also, thrasher. Also called thresher shark. a large shark of the genus Alopias, especially A. vulpinus, which threshes the water with its long tail to drive together the small fish on which it feeds.
Origin of thresher
1350-1400; Middle English thressher. See thresh, -er1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for thresher
  • Chickens roost under the shade of a rusted-out thresher-binder.
  • Scientists suspected that the common thresher shark used its long tail to capture food-and now they have video to prove it.
  • During the spring, the common thresher is the primary target of this fishery in the northern area.
British Dictionary definitions for thresher


a person who threshes
short for threshing machine
Also called thrasher, thresher shark. any of various large sharks of the genus Alopias, esp A. vulpinus, occurring in tropical and temperate seas: family Alopiidae. They have a very long whiplike tail with which they are thought to round up the small fish on which they feed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for thresher

late 14c., agent noun from thresh. The thresher shark (c.1600) so called for its long upper tail shape, which resembles a threshing tool.

Online Etymology Dictionary, © 2010 Douglas Harper
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