A Sweat

1. Fluid that exits the body through pores in the skin usually due to physical stress and/or high temperature for the purpose of regulating body temperature and removing certain compounds from the circulation.

Synonym: perspiration

2. The state of one who sweats; diaphoresis.
3. (Britain, slang, military slang, especially WWI) A soldier (especially one who is old or experienced).
4. (historical) The sweating sickness.
5. Moisture issuing from any substance.
6. A short run by a racehorse as a form of exercise.
7. (uncountable) Hard work; toil.

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