Cos'è cutter? Cos'è cutter? One that cuts, especially in tailoring.A device or machine that cuts.Nautical A single-masted, fore-and-aft-rigged sailing vessel with two or more headsails and a mast set somewhat farther aft than that of a sloop.Nautical A ship's boat, powered by a motor or oars and used for transporting stores or passengers.A small, lightly armed boat used by the Coast Guard.A small sleigh, usually seating one person and drawn by a single horse.