poniard

noun

1. (historical)A dagger typically having a slender square or triangular blade.

   “The sir King ha's wag'd with him six Barbary horses, / against the which he impon'd as I take it, sixe French / Rapiers and Poniards, with their assignes, as Girdle, / Hangers or so[…].”

   “You yeoman phevvterer, conduct mee to / The Lady of the manſion, or my poniard / Shall diſemboge thy ſoule.”

   “One of the tragic authors, finding himself assaulted in the dark, had, by way of poinard, employed upon his adversary's throat a knife which lay upon the table, for the convenience of cutting cheese […].”

   “A Poynard is more sure to wound a man, which forsomuch as it requireth more motion and vigor of the arme, than a pistol, it's stroke is more subject to be hindred or avoyded.”

   “On this occasion I said nothing, but concealing his poniard in my clothes, I hasted up the mountain, determined to execute my purpose […].”

verb

1. To stab with a poniard.

   “Manfred […] would have poignarded the peasant in their arms.”