A
thresher is a device that first separates the head of a stalk of grain from the straw, and then further separates the kernel from the rest of the head.
A
thresher is a type of
shark, harmless to man and easily recognizable because its tail is longer than the combined length of body and head.
USS Thresher has been the name of two
United States Navy submarines:
SS-200 and SSN-593.
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