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ALL meanings of vacuum flask

vac·u·um flask
V v
  • countable noun vacuum flask A vacuum flask is a container which is used to keep hot drinks hot or cold drinks cold. It has two thin silvery glass walls with a vacuum between them. 0
  • noun vacuum 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 0
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