Definition of "thresher" [thresh•er]

• One that threshes: a thresher of grain. (noun)
• A threshing machine. (noun)
• Any of various large sharks of the genus Alopias, especially A. vulpinus of the Atlantic and eastern Pacific oceans, having a tail with a long whiplike upper lobe with which it strikes the surface of the water. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The thresher is a square frame drawn over the grain -- which is spread upon the bare ground -- and is furnished on its under side with steel blades which not only shell the grain out of the ear, but also reduce the straw into chaff, which is desirable, as storing for feed more conveniently."
• "A thresher is a machine that pulls in the harvest, separates the grain from the chaff."
• "Even if some have more kids there are those with good intentions. poor really is poor. thresher"