Definition of flask noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//flɑːsk//
    ; NAmE NAmE//flæsk//
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  1. 1a bottle with a narrow top, used in scientific work for mixing or storing chemicals
  2. 2(British English) = vacuum flask a flask of tea/coffee compare Thermos™
  3. 3(especially North American English) (also hip flask North American English, British English) a small flat bottle made of metal or glass and often covered with leather, used for carrying alcohol
  4. Word OriginMiddle English (in the sense ‘cask’): from medieval Latin flasca. From the mid 16th cent. the word denoted a case of horn, leather, or metal for carrying gunpowder. The sense ‘glass container’ (late 17th cent.) was influenced by Italian fiasco, from medieval Latin flasco. Compare with flagon.Extra examples He had a flask of Scotch in his pocket. She pulled out her flask and drank from it. We took a flask of tea with us. When he climbed in the snow he always carried a silver flask of brandy for emergencies. a culture flask containing 4 ml of the medium He reached into a pocket of his greatcoat and brought out a flat silver flask. He took a swig from his hip flask. Heat the solution gently in a conical flask. I’ve brought along some sandwiches and a flask of tea.
See the Oxford Advanced American Dictionary entry: flask