(dated) A flat metal container for alcoholic beverages, with a narrow neck suitable for use as a drinking spout, designed to fit into a man's pocket and popular in the 19th and early 20th centuries.

(chemistry) An item of glass laboratory equipment consisting of a flask designed for the extraction of air to leave an inert gas or vacuum before introducing the reagents.

(chemistry) A glass laboratory flask of a conical profile with a narrow tubular neck and a flat bottom, used to manipulate solutions or carry out titrations.

(chemistry) A glass laboratory flask of a conical profile with a narrow tubular neck and a flat bottom, used to manipulate solutions or to carry out titrations

(chemistry) A type of glass flask used in a laboratory similar to an Erlenmeyer flask, but with a side spout used for connection to an aspirator.

(chemistry) A glass flask with a round body used in a laboratory for holding chemical liquids and solutions. Normally with a round bottom for uniform heating, but may have a flattened base to stand on a flat surface without support.

(chemistry) A glass flask used in a laboratory for holding chemical liquids and solutions. They are similar in shape to a Florence flask, but with a longer neck and wider flat bottom. The neck is marked so that a particular volume of liquid can be measured with high precision.

A type of double-walled vacuum flask with silver lining.

Synonym of thermos / (chemistry) A Dewar vessel, a scientific instrument used to store liquified gases.

A container designed to hold small amounts of alcohol, especially spirits, for personal consumption on the go.