lighter UK /ˈlaɪtə/US /ˈlaɪtɚ/noun 3verb 2forms 3 noun3 •a small device held in the hand that sets its own gas burning when a wheel or button is pressed, used to set a cigarette or a fire burningCigarette in mouth, he clutched his pockets in search of a lighter. •A flat-bottomed boat for carrying heavy loads across short distances (especially for canals or for loading or unloading larger boats). •A person who lights things.a lighter of lamps verb2 •To transfer (cargo or passengers) to or from a ship by means of a lighter or other small vessel.Troops and stores were lightered to the wharves inside the harbor by steamers Orizaba and Berkshire. — 1900 •To transfer cargo or fuel from (a ship), lightening it to make its draft less or to make it easier to refloat. formslightered · lightering · lighters