[Elamur Dictionary](https://md.dictionary.elamur.ai/free/en/) · [this page in HTML](https://dictionary.elamur.ai/free/en/english/flask/)

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# flask

noun (a flask, flasks)

«flask» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. A flask is a container that keeps drinks hot or cold, also called a vacuum flask or Thermos. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/#m1)
2. In science, a flask is a glass container with a narrow neck, used in experiments. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/#m2)
3. A flask can also be a small flat bottle for carrying a drink in a pocket. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/#m3)

### In the lessons

In everyday life families take a flask of tea or soup on a picnic or walk; in science labs, conical flasks hold liquids for experiments. In science lessons pupils learn how a vacuum flask stops heat moving in or out. Phrases: «a flask of tea», «a conical flask», «a vacuum flask».

### Examples

- Grandpa poured hot tea from his flask. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/#x1)
- Take a flask of soup on the cold walk. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/#x2)
- The scientist swirled the liquid in the flask. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/#x3)
- A vacuum flask keeps drinks hot for hours. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/#x4)
- The flask also keeps cold drinks cold. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/#x5)
- Use a conical flask for this experiment. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/#x6)
- My water flask fits in my school bag. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/#x7)
- He was about to take a drink from a flask. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/#x8)

### Note

Countable. A vacuum flask works because there is almost no air between its two walls, so heat cannot move through easily. Safety: glass flasks break; handle them with care and wear goggles in experiments.

## On Mova

- [Trees and pragmatics of «flask» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/F/flask/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«flask» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/flask.html) on Mova free.