\ ˈflask How to pronounce flask (audio) , ˈfläsk \

Definition of flask

: a container often somewhat narrowed toward the outlet and often fitted with a closure: such as
a : a broad flattened necked vessel used especially to carry an alcoholic beverage on the person
b British : thermos

Examples of flask in a Sentence

Recent Examples on the Web This also makes for a great groomsmen gift that feels more special than ties or a flask. Melissa Epifano, PEOPLE.com, 25 Aug. 2021 Each flask was kept at thirty-seven degrees Celsius, and contained an identical cocktail of water, glucose, and other nutrients. Dhruv Khullar, The New Yorker, 11 Aug. 2021 Bravo to Erin Dudley, the restaurant group’s wine director, for offering a dozen or so Italian wines by the glass, half bottle and full flask, and at prices in tune with the rest of the list. Washington Post, 16 July 2021 All that’s missing is the chaperone who confiscates a flask of vanilla vodka. Devon Ivie, Vulture, 30 June 2021 That bottle may be the centerpiece of the collection, but just as important is the accompanying flask, a stunning example of Mexican craftsmanship. Bryan Hood, Robb Report, 21 May 2021 Or consider the Water Essence, a toner that pours out of a display-worthy matte white flask with a goldtone cap. New York Times, 11 May 2021 Place mixture into a distillation flask of a rotary evaporator; run at 200mbar and a water bath temperature at 137°F (57°C). Megan Murphy, Robb Report, 21 Apr. 2021 One common theme was a monkey taking the place of a doctor, examining a flask of urine to diagnose an illness. Livia Gershon, Smithsonian Magazine, 24 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'flask.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of flask

1549, in the meaning defined above

History and Etymology for flask

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

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Last Updated

3 Sep 2021

Cite this Entry

“Flask.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flask. Accessed 17 Sep. 2021.

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More Definitions for flask



English Language Learners Definition of flask

: a container that is shaped like a flattened bottle and that is used to carry alcohol
: a glass bottle used in scientific laboratories


\ ˈflask How to pronounce flask (audio) \

Kids Definition of flask

: a container like a bottle with a flat or rounded body


\ ˈflask How to pronounce flask (audio) \

Medical Definition of flask

 (Entry 1 of 2)

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


transitive verb

Medical Definition of flask (Entry 2 of 2)

: to place (a denture) in a flask for processing

More from Merriam-Webster on flask

Thesaurus: All synonyms and antonyms for flask

Nglish: Translation of flask for Spanish Speakers

Britannica English: Translation of flask for Arabic Speakers


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