Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun workhorse

2 senses of workhorse

Sense 1
workhorse -- (machine that performs dependably under heavy use; "the IBM main frame computers have been the workhorse of the business world")
       => machine -- (any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks)

Sense 2
workhorse -- (a horse used for plowing and hauling and other heavy labor)
       => horse, Equus caballus -- (solid-hoofed herbivorous quadruped domesticated since prehistoric times)