sweat bag
- noun
- /swɛt bæg/
:
saco de enfriamiento
- Early travelers often relied on a sweat bag to prevent their drinking water from becoming too warm.
Examples
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The explorer filled his sweat bag with water to keep it cool during the crossing.
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A sweat bag hung from the tree branch, dripping moisture as it cooled the contents inside.
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The athlete filled the sweat bag with water.
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I bought two sweat bags for the hike.
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Travelers would often use a sweat bag to keep their water cool in the hot sun.
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A sweat bag is essential in desert climates to ensure hydration without overheating the water.
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He filled his sweat bag with fresh water before heading out into the heat.
How Cool
Surface Forms
Morphology
The phrase combines 'sweat' (moisture/exuding liquid) and 'bag' (a container), so learners will likely infer a bag related to moisture. However, the specific technical sense — a porous container used to hold water and cool it by evaporation — is a specialized extension of 'sweat' and not fully predictable from the everyday noun sense, so it is only partially transparent to B1 learners.
Etymology
Sweat bag comes from a simple image: a cloth bag whose surface seems to sweat as water evaporates from it, and that cooling effect makes the liquid inside colder. So a sweat bag is a cloth or canvas bag used 'to keep water cool' by evaporation.