Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: vacuum flask  va-kyoom flãsk
Usage: Brit, Cdn (US: vacuum bottle)
  1. Flask with double walls separated by vacuum; used to maintain substances at high or low temperatures
    - vacuum bottle [N. Amer]

Derived forms: vacuum flasks

Type of: flask

Encyclopedia: Vacuum flask