: a container often somewhat narrowed toward the outlet and often fitted with a closure: such as
a
: a broad flattened necked vessel used especially to carry an alcoholic beverage on the person
b
British
: thermos
Examples of flask in a Sentence
Recent Examples on the Web
Room amenities are sustainable and locally made, with Polynesian Monoi presented in recycled, refillable flasks.
—
Condé Nast, Condé Nast Traveler, 18 May 2026
She was buried with objects such as jet hairpins, a group of rare glass flasks, and other grave goods.
—Maria Mocerino, Interesting Engineering, 17 May 2026
Nolan, by reputation, is a solemn figure—a no-nonsense puzzle-box auteur in a crisp waistcoat, a flask of tea tucked into his jacket pocket.
—Eliana Dockterman, Time, 12 May 2026
After a group of glamorous bell hops brought out suitcases filled with silver flasks that were handed out to the audience.
—Eve Batey, Vanity Fair, 3 May 2026
See All Example Sentences for flask
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Condé Nast, Condé Nast Traveler, 18 May 2026
She was buried with objects such as jet hairpins, a group of rare glass flasks, and other grave goods.
—Maria Mocerino, Interesting Engineering, 17 May 2026
Nolan, by reputation, is a solemn figure—a no-nonsense puzzle-box auteur in a crisp waistcoat, a flask of tea tucked into his jacket pocket.
—Eliana Dockterman, Time, 12 May 2026
After a group of glamorous bell hops brought out suitcases filled with silver flasks that were handed out to the audience.
—Eve Batey, Vanity Fair, 3 May 2026
See All Example Sentences for flask
Cite this Entry
“Flask.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flask. Accessed 21 May. 2026.
Copy CitationKids Definition
flask
noun
: a container shaped like a flattened bottle
Medical Definition
flask
1 of 2 noun
: a container often somewhat narrowed toward the outlet and often fitted with a closure: as
a
: any of various usually blown-glass vessels used for technical purposes in a laboratory
b
: a metal container in which the materials used to form a dental restoration (as a denture) are processed
flask
2 of 2 transitive verb
: to place (a denture) in a flask for processing
Love words? Need even more definitions?
Merriam-Webster unabridged
