dagger
Americannoun
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a short, swordlike weapon with a pointed blade and a handle, used for stabbing.
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Also called obelisk. Printing. a mark (†) used especially for references.
verb (used with object)
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to stab with or as if with a dagger.
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Printing. to mark with a dagger.
idioms
noun
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a short stabbing weapon with a pointed blade
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Also called: obelisk. a character (†) used in printing to indicate a cross reference, esp to a footnote
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in a state of open hostility
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to glare with hostility; scowl
verb
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to mark with a dagger
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archaic to stab with a dagger
Other Word Forms
Noun Inflected Forms
Etymology
Origin of dagger
1350–1400; Middle English, probably alteration of Old French dague, of obscure origin; cf. dag 1
Explanation
A dagger is a weapon, a sharp knife that's used for self-defense or fighting. During the Late Middle Ages, daggers were a sort of back-up to the longer sword, both carried during battles. Most daggers have a sharp, pointed blade and a handle with a "crossguard" that protects a fighter's hand from sliding forward and getting cut. Throughout history, various kinds of daggers have been used in close combat. The word comes from the Old French dague, though its origin beyond that isn't known. The ancient last name Dagard, dating from the 13th century or earlier, meant "one who carries a dagger."
Vocabulary lists containing dagger
"Macbeth": Act 1 Scene 7
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"The Tragedy of Romeo and Juliet," Vocabulary from Act 5
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How I Became a Ghost
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"This support included HMS Dagger monitoring the vessel through the Straits of Gibraltar," he said.
From Barron's • Jan. 22, 2026
Moraes showed a document detailing the plan, codenamed Operation Green and Yellow Dagger, with key sections highlighted.
From BBC • Sep. 9, 2025
In 2022 he won the Crime Writers’ Association’s Diamond Dagger Award for his outstanding contribution to the genre.
From Seattle Times • Apr. 29, 2024
The Kh-47M2 Kinzhal missile, also known as the Dagger, is one of the crown jewels of Russia’s military arsenal.
From Washington Times • May 16, 2023
It was the Dagger of Serendib, the hilt carved and topped by a roaring lion head, now tarnished by time.
From "The Boy Who Met a Whale" by Nizrana Farook
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
