LEVER

[noun] [C] - a bar or handle which moves around a fixed point, so that one end of it can be pushed or pulled in order to control the operation of a machine or move a heavy or stiff objectShe balanced an iron bar on a stone and used it as a lever to lift open the drain cover.A door handle is a type of lever.(figurative) The blackmailer used the threat of scandal as a lever to get money from his victims.a gear lever in a car(UK) a brake lever (US and ANZ handbrake) on a bicycleA lever arch file is a type of large container used to hold paper, in which paper is held on two big curved pieces of metal which are opened or closed using a metal bar.See picture: Stationery