1. poniard - Noun
2. poniard - Verb
A kind of dagger, -- usually a slender one with a triangular or square blade.
To pierce with a poniard; to stab.
Source: Webster's dictionaryThe East Wind, an interloper in the dominions of Westerly Weather, is an impassive-faced tyrant with a sharp poniard held behind his back for a treacherous stab. Joseph Conrad
The poniard and the stiletto were once the resource of a murderous spirit; now the vengeance, which formerly would assassinate in the dark, libels character, in the light of day, through the medium of the press. But through this instrumentality good can be wrought as well as evil. Horace Mann
I welcome this opportunity of pricking the bloated bladder of lies with the poniard of truth. Aneurin Bevan
There is no traitor like him whose domestic treason plants the poniard within the breast that trusted to his truth. Lord Byron