Meaning of WORKHORSE

Pronunciation:			'wurk`hors
WordNet Dictionary
	Definition:		[n]  a horse used for plowing and hauling and other heavy labor [n]  machine that performs dependably under heavy use; "the IBM main frame computers have been the workhorse of the business world"
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	See Also:		dobbin, draft horse, draught horse, dray horse, Equus caballus, farm horse, horse, machine, packhorse, plough horse, plow horse