vacuum flask

noun

1. Also called: Thermos.  Dewar flask. an insulating flask that has double walls, usually of silvered glass, with an evacuated space between them. It is used for maintaining substances at high or low temperatures

Example Sentences

Since developing the all-steel vacuum flask in 1913, the Stanley company has cultivated a particularly rugged, if not decidedly masculine, image.

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We also had 500 plastic bags, a vacuum flask of dry ice, and 350 cryogenic vials, each the size and shape of a pencil stub.

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He was pumping the air from the vacuum flask, and took no notice; it was as if he’d already forgotten her.

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The drink is hugely popular and it’s common to see people walking with gourd in hand and a vacuum flask of hot water tucked under their arm.

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A small office, the floor cluttered with knee-high vacuum flasks.

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