#lever  a rigid bar pivoted about a fulcrum
  supertype:  bar.artifact  a rigid piece of metal or wood; usually used as a fastening or obstruction of weapon; "there were bars in the windows to prevent escape"
  part:  fulcrum
  subtype:  compound_lever  a pair of levers hinged at the fulcrum
     subtype:  nutcrackers__nutcracker  a compound lever used to crack nuts open
     subtype:  pair_of_pliers__pliers__plyers  a gripping hand tool with two hinged arms and (usually) serrated jaws
        subtype:  locking_pliers  pliers that can be locked in place
        subtype:  needlenose_pliers  small pliers with long thin jaws for fine work
        subtype:  pump-type_pliers  a type of pliers
        subtype:  rib_joint_pliers  a type of pliers
        subtype:  slip-joint_pliers  pliers with a joint adjustable to two positions in order to increase the opening of the jaws
     subtype:  pair_of_scissors__scissors  and edge tool having two crossed pivoting blades
        subtype:  clipper__clippers  scissors for cutting hair or finger nails
        subtype:  shears  large scissors with strong blades
           subtype:  clippers__clipper  shears for cutting grass or shrubbery
           subtype:  pruning_shears  shears with strong blades used for light pruning of woody plants
              subtype:  secateurs__secateur  (British) small pruning shears with a spring that holds the handles open and a single blade that closes against a flat surface
           subtype:  snips__tinsnips  hand shears for cutting sheet metal
           subtype:  thinning_shears  shears with one serrate blade; used for thinning hair
        subtype:  snuffers  scissors for cropping and holding the snuff of a candlewick
  subtype:  crowbar__wrecking_bar__pry__prybar  a heavy iron lever with one end forged into a wedge
     subtype:  jim_crow__jimcrow  a crowbar fitted with a claw for pulling nails
     subtype:  jimmy__jemmy  a short crowbar; "in England they call a jimmy and jemmy"
  subtype:  gun_trigger__guntrigger__trigger  lever that activates the firing mechanism of a gun
     subtype:  hair_trigger  a gun trigger that responds with little pressure
  subtype:  hand_throttle  a hand-operated lever that controls the throttle valve
  subtype:  key.lever  a lever that actuates a mechanism when depressed
     subtype:  backspace_key__backspacekey__backspacer  the typewriter key used for back spacing
     subtype:  control_key__controlkey__command_key__commandkey  (computer science) the key on a computer keyboard that is used (in combination with some other key) to type control characters
     subtype:  return_key__return  the key on electric typewriters or computer keyboards that causes a carriage return and a line feed
     subtype:  space_bar__spacebar  the bar-shaped typewriter key that introduces spaces when used
     subtype:  tab_key__tabkey  the key on an electric typewriter that causes a tabulation
     subtype:  telegraph_key__telegraphkey  key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed
  subtype:  peavey__peavy__cant_dog  a stout lever with a sharp spike; used for handling logs
     subtype:  cant_hook  a peavey having a hook instead of a spike; used for handling logs
  subtype:  foot_pedal__pedal__treadle__foot_lever  a lever that is operated with the foot
     subtype:  accelerator_pedal__accelerator__gas_pedal__gaspedal__gas__throttle__gun  a pedal that controls the throttle valve; "he stepped on the gas"
     subtype:  brake_pedal__brakepedal  foot pedal that moves a piston in the master brake cylinder
     subtype:  clutch_pedal__clutch  a pedal that operates a clutch
     subtype:  soft_pedal  a pedal on a piano that moves the action closer to the strings and so soften the sound
     subtype:  sustaining_pedal__loud_pedal  a pedal on a piano that lifts the dampers from the strings and so allows them to continue vibrating
  subtype:  pinch_bar__pinchbar  a lever with a pointed projection that serves as a fulcrum; used to roll heavy wheels
  subtype:  ripping_bar  a steel lever with one end formed into a ripping chisel and the other a gooseneck with a claw for pulling nails
  subtype:  rocker_arm__valve_rocker__valverocker  a lever pivoted at the center; used especially to push a valve down in an internal-combustion engine
  subtype:  spark_lever__sparklever  (on early automobiles) a lever mounted on the steering column and used to adjust the timing of the ignition
  subtype:  control_stick__controlstick__stick__joystick  a lever used by a pilot to control the ailerons and elevators of an airplane
  subtype:  tappet  a lever that is moved in order to tap something else
  subtype:  tiller  lever used to turn the rudder on a boat
  subtype:  tire_iron__tire_tool  hand tool consisting of a lever that is used to force the casing of a pneumatic tire onto a steel wheel

No statement uses or specializes lever; click here to add one.