Noah Webster's New International Dictionary of the English Language

1. (v. i.) To excrete fluids through the pores of the skin; to sweat.

2. (v. i.) To be evacuated or excreted, or to exude, through the pores of the skin; as, a fluid perspires.

3. (v. t.) To emit or evacuate through the pores of the skin; to sweat; to excrete through pores.