ˈflask How to pronounce flask (audio)
: a container often somewhat narrowed toward the outlet and often fitted with a closure: such as
: a broad flattened necked vessel used especially to carry an alcoholic beverage on the person
British : thermos

Examples of flask in a Sentence

Recent Examples on the Web The items include a Spanish amphora that dates to between 150 and 170 C.E., as well as drinking vessels and flasks from Africa that date to the Roman period. Sarah Kuta, Smithsonian Magazine, 19 Mar. 2024 Stanley is also using the opportunity to launch a new collection of stainless steel pitchers, flasks, coolers, cocktail shakers and more. Chris Morris, Fortune, 22 Mar. 2024 Outside food, beverage, liquid containers, alcohol, cans, bottles, flasks (hydroflasks, metal, etc.) or coolers. Ed Masley, The Arizona Republic, 21 Mar. 2024 The Party Patio collection includes pitchers, coolers, water jugs, flasks and more in bright colors. Ana Calderone, Peoplemag, 18 Mar. 2024 The store’s gift selection includes decanter sets, carry-on cocktail kits and needlepoint flasks. Evan Moore, Charlotte Observer, 30 Jan. 2024 Barbie star Rhea Perlman and Abbott Elementary star Lisa Ann Walter came prepared to the annual awards show, sharing a funny moment — and a flask — during the opening monologue. Devan Coggan, EW.com, 24 Feb. 2024 Blunt, who's shockingly never been nominated for an Oscar, makes the most of Kitty Oppenheimer's scenes, which mostly see her guzzling liquor from a flask, standing behind her husband's pursuits, and reluctantly raising their children on her own. Joey Nolfi, EW.com, 21 July 2023 Here’s how the process works: The milk is transferred into glass flasks and pooled with milk from other donors. Meredith Newman, Kansas City Star, 24 Jan. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'flask.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Middle French flasque powder flask, ultimately from Late Latin flascon-, flasco bottle, probably of Germanic origin; akin to Old High German flaska bottle

First Known Use

1549, in the meaning defined above

Time Traveler
The first known use of flask was in 1549

Dictionary Entries Near flask

Cite this Entry

“Flask.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flask. Accessed 14 Apr. 2024.

Kids Definition


: a container shaped like a flattened bottle

Medical Definition


1 of 2 noun
: a container often somewhat narrowed toward the outlet and often fitted with a closure: as
: any of various usually blown-glass vessels used for technical purposes in a laboratory
: a metal container in which the materials used to form a dental restoration (as a denture) are processed


2 of 2 transitive verb
: to place (a denture) in a flask for processing

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