poniard UK /ˈpɒnjəd/US /ˈpɑnjɚd/noun 1verb 1forms 3 noun1 •(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[…]. — 1599 verb1 •To stab with a poniard.Manfred […] would have poignarded the peasant in their arms. — 1764 formsponiarded · poniarding · poniards