Definition of vacuum flask in English:

vacuum flask


  • A container that keeps a substance hot or cold by means of a double wall enclosing a vacuum.

    • ‘Make sure you have enough warm clothing, that your mobile phone is fully charged, and take a vacuum flask with a hot drink.’
    • ‘Vacuum flasks can help maintain flavour.’
    • ‘You'll appreciate a warm drink from a vacuum flask, too.’
    • ‘Pouring the liquid oxygen from a vacuum flask he created 10 inches of frost inside the bomb and was able to defuse it successfully.’
    • ‘Mix in the coriander and pour hot into a large vacuum flask.’
    bottle, container, vessel
    View synonyms


vacuum flask