Sweat is defined as to perspire by releasing moisture from the surface or pores of the skin.(verb)
An example of to sweat is a person's shirt being wet after they've run a five-mile race.
See sweat in Webster's New World College Dictionary
Origin: ME sweten < OE swætan < swat, sweat, akin to Ger schweissen < IE base *sweid-, to sweat > Gr hidros, L sudor, sweat
Origin: altered < the v. < ME swat < OE
See sweat in American Heritage Dictionary 4
verb sweat·ed or sweat, sweat·ing, sweats verb, intransitive
Origin: Middle English sweten
Origin: , from Old English swǣtan; see sweid- in Indo-European roots.
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