To excrete perspiration through the pores in the skin; perspire. To exude in droplets, as moisture from certain cheeses or sap from a tree. To condense atmospheric moisture. To release moisture, as hay in the swath. To ferment, as tobacco during curing. Informal To work long and hard. Informal To suffer much, as for a misdeed. Informal To fret or worry. To excrete (moisture) through a porous surface, such as the skin. To gather and condense (moisture) on a surface. To cause to perspire, as by drugs, heat, or strenuous exercise. To make damp or wet with perspiration. To cause to work excessively; overwork. To overwork and underpay (employees). Slang To interrogate (someone) under duress: sweated the suspected spy for hours. Slang To extract (information) from someone under duress: The police sweated the information out of the suspect. Metallurgy To join (metal parts) by interposing cold solder and then heating. To steam (vegetables or other food). Informal To fret or worry about: Don't sweat the details. The colorless saline moisture excreted by the sweat glands; perspiration. Condensation of moisture in the form of droplets on a surface. The process of sweating. A condition or period of sweating: worked up a sweat raking leaves. The condition of being sweated. Strenuous, exhaustive labor; drudgery.