Word
Definition
n. a container used to hold liquids. In a kitchen, it often keeps drinks hot or cold; in a science lab, it is a glass bottle with a special shape for experiments.
n. a container with a narrow neck used to hold liquids, typically made of glass for laboratory use or insulated metal for maintaining temperature.
Examples
“He poured hot coffee from his flask into a cup.”
“The chemist carefully swirled the blue liquid inside the glass flask to ensure the chemicals mixed thoroughly.”
“To maintain the integrity of the sample, the researcher transferred the solution into a vacuum-insulated flask designed to prevent any thermal exchange with the external environment.”
Examples
simple
“He poured hot coffee from his flask into a cup.”
contextual
“The chemist carefully swirled the blue liquid inside the glass flask to ensure the chemicals mixed thoroughly.”
complex
“To maintain the integrity of the sample, the researcher transferred the solution into a vacuum-insulated flask designed to prevent any thermal exchange with the external environment.”
Usage
In British English, often refers specifically to a vacuum flask (Thermos); in American English, frequently refers to a small, flat container for alcohol.
Real-World Examples
“Unlike previous methods, the new process can also be completed in the same flask from start to finish.” Etymology
From Middle English flask, flaske (“case, cask, keg”), from Old English flasce, flaxe (“bottle, flask”) and Medieval Latin flascō (“bottle”); from Frankish flaskā; both from Proto-Germanic flaskǭ (“braid-covered bottle, wicker-enclosed jug”), from Proto-Indo-European ploḱ-skō (“flat”), or from Proto-Indo-European pleḱ- (“to weave”). Doublet of fiasco, flacon, and flagon. Related to Dutch fles; also German Low German Flaske, Fless, German Flasche, Danish flaske; also Lithuanian plókščias, Czech ploský, Albanian flashkët. The sense “laboratory glassware” is from Italian fiasco, and the sense “container for holding a casting mold” is from Middle French flasque (“powder flask”), itself from Old Spanish flasco, frasco, both from Late Latin above.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Domain
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
- Frequency
- Frequent
- Level
- B2 · Upper Intermediate
- Updated
- アルファベット
- 読み方の一覧 →
QR code
englishreference.com/q/flask
※ 機械で選んだ訳語です。ネイティブスピーカーによる確認はまだです。
「日本語」 data: JMdict (EDRDG), CC BY-SA 4.0