flask Definition in Cambridge British English Dictionary
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Definition of "flask" - British English Dictionary

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flasknoun [C]

uk   /flɑːsk/  us   /flæsk/

flask noun [C] (HOT DRINKS)

UK (US trademark Thermos) a special container that keeps drinks hot or cold: a flask of coffee/tea

flask noun [C] (ALCOHOL)

a flat bottle that is used to carry alcohol in your pocket: a hip flask

flask noun [C] (SCIENCE)

a glass container for liquids with a wide base and a narrow neck, used in scientific work
(Definition of flask from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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