vacuum flask

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Definitions from WordNet

Noun vacuum flask has 1 sense

vacuum flask, vacuum bottle - flask with double walls separated by vacuum; used to maintain substances at high or low temperatures
--₁ is a kind of flask
--₁ has particulars:
Dewar flask, Dewar; thermos, thermos bottle, thermos flask

Definitions from the Web

Vacuum Flask

Definition:

A vacuum flask, also known as a thermos, is a container used to keep liquids hot or cold for extended periods by reducing heat transfer through its vacuum-insulated walls.

Sample Sentences:

1. I always carry a vacuum flask filled with hot coffee on camping trips.

2. She poured the warm soup into the vacuum flask to keep it hot for lunch.

3. Oliver took a sip from his vacuum flask and enjoyed the refreshing coldness of the water.

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