dagger

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A short pointed weapon with sharp edges.
• noun Something that agonizes, torments, or wounds.
• noun A double dagger.
• idiom (look daggers at) To glare at angrily or hatefully.

from The Century Dictionary.

• To pierce with a dagger; stab.
• To provide with a dagger.
• To dagger arms. See arm.
• noun In ship-building, any timber lying diagonally.
• noun An edged and pointed weapon for thrusting, shorter than a sword, and used, commonly in connection with the rapier, by swordsmen in the sixteenth and seventeenth centuries, held in the left hand to parry the thrust of an adversary's rapier.
• noun Any straight stabbing-weapon, as the dirk, poniard, stiletto, etc.
• noun In printing, an obelisk; a mark of reference in the form of a dagger, thus: .
• noun In entomology, the popular name of several noctuid moths of the genus Acronycta: so called from a black dagger-like mark near the inner angle of the fore wings.
• noun In Sollas's nomenclature of sponge-spicules, a form of the sexradiate spicule resulting from reduction of the distal ray and great development of the proximal ray.
• noun plural In botany: The sword-grass, Phalaris arundinacea, or perhaps Poa aquatica.
• noun The yellow flag, Iris Pseudacorus.
• noun Dagger of lath
• noun Double dagger

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb obsolete To pierce with a dagger; to stab.
• noun A timber placed diagonally in a ship's frame.
• noun A short weapon used for stabbing. This is the general term: cf. poniard, stiletto, bowie knife, dirk, misericorde, anlace.
• noun (Print.) A mark of reference in the form of a dagger [†]. It is the second in order when more than one reference occurs on a page; -- called also obelisk.
• noun (Zoöl.) any moth of the genus Apatalea. The larvæ are often destructive to the foliage of fruit trees, etc.
• noun the wooden weapon given to the Vice in the old Moralities.
• noun a mark of reference [‡] which comes next in order after the dagger.
• noun to look or speak fiercely or reproachfully.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A timber placed diagonally in a ship's frame.
• noun weapon A stabbing weapon, similar to a sword but with a short, double-edged blade.
• noun The text character (†).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a character used in printing to indicate a cross reference or footnote
• noun a short knife with a pointed blade used for piercing or stabbing