rocker arm rocker arm

noun

a lever pivoted at the center; used especially to push a valve down in an internal-combustion engine  ( rocker arm, valve rocker )
a lever pivoted at the center; used especially to push a valve down in an internal-combustion engine

 Mytilene Mytilene

noun

an island of eastern Greece in the eastern Aegean Sea; in antiquity it was famous for lyric poetry  ( Lesbos, Lesvos, Mytilene )
an island of eastern Greece in the eastern Aegean Sea; in antiquity it was famous for lyric poetry

 verge verge

noun

() the limit beyond which something happens or changes  ( brink, verge )
the limit beyond which something happens or changes
 on the verge of tears
on the verge of tears
 on the brink of bankruptcy
on the brink of bankruptcy

() a region marking a boundary  ( threshold, brink, verge )
a region marking a boundary

a grass border along a road  ( verge )
a grass border along a road

a ceremonial or emblematic staff  ( scepter, sceptre, verge, wand )
a ceremonial or emblematic staff

verb

border on; come close to  ( verge )
border on; come close to
 His behavior verges on the criminal
His behavior verges on the criminal

 seesaw seesaw

noun

a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end  ( dandle board, seesaw, teeter, teeter-totter, teeterboard, teetertotter, tilting board )
a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end
  The seesaw in the playground was always a favorite of mine when I was a kid
The seesaw in the playground was always a favorite of mine when I was a kid

verb

move unsteadily, with a rocking motion  ( seesaw, totter, teeter )
move unsteadily, with a rocking motion

move up and down as if on a seesaw  ( seesaw )
move up and down as if on a seesaw

ride on a plank  ( seesaw, teeter-totter, teetertotter )
ride on a plank