04252 מַחֲלָף MemChetLamedPei machalaph [makh-al-awf’] from 02498 חָלַף chalaph change or pass; n m; [BDB-322b] [{See TWOT on 666 @@ "666d" }] AV-knives 1; 1
1) knife
Appears in Ezra 1 as מַחֲלָפִ֖ים MemChetLamedPeiYodMem "מַחֲלָפִ֖ים תִּשְׁעָ֥ה וְעֶשְׂרִֽים׃ ס" translated "nine and twenty knives,". A common word for knife is 02719 חֶרֶב chereb.