cutlass /ˈkʌtləs/noun 2verb 1forms 3 noun2 •A short sword with a curved blade, and a convex edge; once used by sailors when boarding an enemy ship.She could feel Tern’s stare fixed right between her shoulder blades, and knew he was aching to plunge his cutlass there. — 2015 •A similarly shaped tool; a machete. verb1 •To cut back (vegetation) with a cutlass. formscutlassed · cutlassing · cutlasses