Edged Tool, Cutlery, Knife
noun
A blade thing is an edged tool or cutlery.
はもの
The reading is the kun'yomi readings of the kanji. You learned 刃's reading with the kanji, and you probably remember 物 from so many other words.
刃物をちらつかせながら、男は低い声で私に「こっちへ来い」と言いました。
While brandishing his knife, he said to me in a low voice, "Get over here."