late 14c., apparently from Old French dague "dagger," from Old Provençal dague or Italian daga, which is of uncertain origin; perhaps Celtic, perhaps from Vulgar Latin *daca "Dacian kni [..]

weapon made of a short, sharp blade.

a short knife with a pointed blade used for piercing or stabbing a character used in printing to indicate a cross reference or footnote A dagger is a double-edged blade used for hitting stabbing or th [..]

a short sword

A short pointed knife. There were many forms of daggers worn during the high middle ages; they are more frequently worn in illuminations than are swords

In printing, a character in the shape of a vertical stroke crossed above its midpoint, used in text as a second-order reference mark following use of the asterisk (*). When it appears before a persona [..]

If seen in a dream, denotes threatening enemies. If you wrench the dagger from the hand of another, it denotes that you will be able to counteract the influence of your enemies and overcome misfortune.   

The † symbol sometimes used to indicate footnotes in text. Also comes in ‡ (double dagger) flavour.

Dagger is a double edged blade, usually used as a defense weapon in close combat. It is primarily meant for stabbing or thrusting. A dagger comes with or without a hand guard and usually has a tang ru [..]

(n) a short knife with a pointed blade used for piercing or stabbing(n) a character used in printing to indicate a cross reference or footnote

Piece of timber used to support poppets of bilgeways during launching of a vessel.

A piece of timber that is fastened to the poppets of the bilgeway and crosses them diagonally to keep them together. Dagger applies to anything that stands in a diagonal position.

A type of knife. Lance:

a long knife.

A short bladed weapon. These are shorter than rapiers