flask

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Flask

From Middle English flask (“cask, keg”), from flaske (“case”), from Anglo-Norman flaske (subject case), flascon (object case), from Late Latin flascō ‘bottle’, from Frankish *flasko (cf. Dutch (Flemish) vlesch), from Proto-Germanic *flaskōn ‘braid-covered bottle, wicker-enclosed jug’ (cf. Old English flaxe, flasce, German Flasche), from Proto-Indo-European *ploḱ-skō ‘flat’ (cf. Lithuanian plókščias, Czech ploský). Sense 2 from Italian fiasco and sense 3 from Middle French flasque (“powder flask”), itself from Old Spanish flasco, frasco, both from Late Latin above.

flask (plural flasks)

A container used to discreetly carry a small amount of a hard alcoholic beverage; a pocket flask.
(sciences) 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.
(engineering) A container for holding a casting mold, especially for sand casting molds.

container for a small amount of beverage

laboratory glassware

flask