Simple past tense and past participle of poniard.(verb)
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Use "poniarded" in a sentence
"Lindesay, Ruthven, and your kinsman Morton, poniarded Rizzio, and yet you now see no blood on their embroidery — the Lord Semple stabbed the Lord of"
"I foresaw we should incur some danger on approaching the victors in the first flush of their success, which was not unstained with cruelty; for one or two of the soldiers, whose wounds prevented them from rising, were poniarded by the victors, or rather by some ragged Highland boys who had mingled with them."
"Whether fearful of their escape, or incensed by some sarcasms which they threw on his tribe, or whether out of mere thirst of blood, this savage, while the other MacGregors were engaged in the pursuit, poniarded his helpless and defenceless prisoners."