Flask

Definitions

1. A narrow-necked vessel of metal or glass, used for various purposes; as of sheet metal, to carry gunpowder in; or of wrought iron, to contain quicksilver; or of glass, to heat water in, etc.
2. A container used to discreetly carry a small amount of a hard alcoholic beverage; a pocket flask.
3. Laboratory glassware used to hold larger volumes than test tubes, normally having a narrow mouth of a standard size which widens to a flat or spherical base.
4. A container for holding a casting mold, especially for sand casting molds.
5. A bed in a gun carriage.
6. A nuclear flask, a large, secure lead-lined container for the transport of nuclear material.
7. A small bottle of liquor.
   Newfoundland

Equivalents

Examples

“Over the years, the railway has been the safest way to move⟳ hazardous chemicals, radioactive waste⟳, fuel for Royal Navy nuclear submarines and imported fuel for reprocessing, as well as flasks containing fuel rods to and from British power stations.”

CEFR level