flask
Word family nounflaskflasket
Utensils, Chemistry
ldoce_107_cflask /flɑːsk $ flæsk/ noun [countableC] 1. 
British EnglishBrEDFU a special type of bottle that you use to keep liquids either hot or cold, for example when travelling 保温瓶 SYN Thermos
British EnglishBrEDFU a special type of bottle that you use to keep liquids either hot or cold, for example when travelling 保温瓶 SYN Thermos2. DFUa hip flask 扁酒瓶
3. HCa glass bottle with a narrow top, used in a laboratory 〔实验室用的〕烧瓶
Examples from the Corpus
flask• Brown headlands, ribbons of current, purple and turquoise waters clear as a flask all shivered and dazzled.• Another takes a sip from a flask in a paper bag.• They even shared cream cakes and tea from a flask at half-time.• Angus thought everyone looked so chilly that he shivered in sympathy and took a swallow from his flask.• What collectors refer to as historical flasks are glass bottles blown into metal molds between about 1815 and 1870.• Alternatively the embryo culture dishes can be placed in sealed flasks pre-equilibrated with a mixture of 5% CO2 in air.• He drank some whisky from the flask in his pack.
(1300-1400) Late Latin flasco