The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a stabbing weapon with a blade sharpened on both sides, used in hand-to-hand combat.
In very ancient times daggers were made from split animal horns or flint. Subsequently, copper, bronze, iron, and, later, steel were used. Steel daggers are often carried in beautifully decorated sheaths. Among certain peoples (such as in the Caucasus) the weapon is part of the national costume.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
What does it mean when you dream about a dagger?
A dagger is usually taken to be a symbol of strong male power. Alternatively, it may be a symbol of treachery (in fiction, people are frequently stabbed in the back with daggers). Daggers sometimes also indicate hostility (“daggers in men’s smiles”).
The Dream Encyclopedia, Second Edition © 2009 Visible Ink Press®. All rights reserved.
A small decorated tracery motif in the form of a distorted cusped lancet, with the foot pointed; a pointed oval-shaped opening in the tracery.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
Daggers, knives, and swords could represent significant feelings of anger toward yourself and others. If you kill or wound a perceived enemy in your dream, your unconscious mind may be encouraging you to conquer your fears. Freud thought that all such objects were phallic symbols.
Bedside Dream Dictionary by Silvana Amar Copyright © 2007 by Skyhorse Publishing, Inc.