A Thermos, Thermos flask, or in American English Thermos bottle, is a container which is used to keep hot drinks hot or cold drinks cold. It has two thin shiny glass walls with no air between them.
[trademark]
Thermos in British English
or Thermos flask (ˈθɜːməs)
noun
trademark
a type of stoppered vacuum flask used to preserve the temperature of its contents
See also Dewar flask
Thermos in American English
(ˈθɜrməs)
trademark
1.
a container, as a bottle, flask, or jug, for keeping liquids at almost their original temperature for several hours: it has two walls enclosing a vacuum and is fitted in a metal or plastic outer case
noun
2. [usuallyt-]
such a vessel
Word origin
< Gr thermos, hot, warm
Examples of 'Thermos' in a sentence
Thermos
On the day it rained, she found him sheltering in the summer-house when she ran down the garden with the Thermos of tea.
Forsythe, Malcolm THE BOOK LADY
Marco said that he would come back with a Thermos of good coffee and something to eat, and left Todd there.
Clive Barker COLDHEART CANYON (2001)
She made him a huge jar of sun tea and iced it down in a Thermos.
J. A. Jance HOUR OF THE HUNTER (1991)
In other languages
Thermos
British English: Thermos® /ˈθɜːməs/ NOUN
A Thermos or Thermos flask is a container which is used to keep hot drinks hot or cold drinks cold. It has two thin shiny glass walls with no air between them.