scelt : knife
The Illunse word for knife is scelt. Scelt is a rare last name. In Anne Bishop's Black Jewels series, Scelt is a place in Kaeleer. In Italian similar word scelte means choices.
This word is a mixture of the Latin word for knife culter (knife; weapon / sacrificial / hunt) and the Old English word for knife seax (knife, instrument for cutting).
sceltas : knives
The Illunse word for knives (nominative plural) is sceltas. Sceltas LLC is a home builder and renovation company in South Carolina.
Knives in Latin is cultri. Knives in Old English is seax (same as the singular).
I considered making knives be scelti, but that didn't fit with my plural schemes.