vacuum flask 
noun chiefly British
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....
- Pouring the liquid oxygen from a vacuum flask he created 10 inches of frost inside the bomb and was able to defuse it successfully.
- You'll appreciate a warm drink from a vacuum flask, too.
- affectionately
- affectionateness
- affectionless
- affective
- affective computing
- affective disorder
- affective fallacy
- affectively
- affective memory
- affectiveness
- affectivity
- affectless
- affectlessness
- affectual
- affectually
- affeer
- affeerer
- affeering
- affeerment
- affeeror
- affeir
- Affenpinscher
- afference
- afferent
- afferently