/flɑ:sk; [US] flæsk; flæsk/
n
1 (a) bottle with a narrow neck, esp one used in scientific laboratories for mixing or storing chemicals 细颈瓶; （尤指）烧瓶.
(b) similarly shaped container for storing oil, wine, etc （装油、酒等的）细颈瓶.
2 (also `hip-flask) small flat-sided bottle of metal or (often leather-covered) glass that is used for carrying alcoholic spirits in the pocket （小而扁的）金属酒瓶或（常为有皮套的）玻璃酒瓶（可装在衣袋里）.
3 = vacuum flask (vacuum).
4 amount contained in a flask 一小酒瓶的容量
*drink a flask of wine, whisky, tea, etc 喝下一小瓶葡萄酒、威士忌、茶等.

n[C]

[Date: 1300-1400; Language: Late Latin;Origin: flasco]
BrE a special type of bottle that you use to keep liquids either hot or cold, for example when travelling
= Thermos
a hip flask
a glass bottle with a narrow top, used in a laboratory