- cylinder
- cyl•in•der[[t]ˈsɪl ɪn dər[/t]] n.1) math. a surface or solid bounded by two parallel planes and generated by a straight line moving parallel to the given planes and tracing a curve bounded by the planes and lying in a plane perpendicular or oblique to them2) any cylinderlike object or part, whether solid or hollow3) mil the rotating part of a revolver, containing the chambers for the cartridges4) hyd a cylindrical chamber in a pump in which a piston slides to move or compress a fluid5) mac a cylindrical chamber in an engine in which the pressure of a gas or liquid moves a sliding piston6) (in printing presses)a) pri a rotating cylinder that produces the impression and under which a flat form to be printed from passesb) pri either of two cylinders, one carrying a curved form or plate to be printed from, that rotate against each other in opposite directions7) bui a cylindrical device in a lock that retains the bolt until tumblers have been pushed out of its way8) ara a cylindrical or barrel-shaped stone or clay object with inscriptions or carvings, worn by the Babylonians, Assyrians, and kindred peoples as a seal or amulet9) to furnish with a cylinder or cylinders10) to subject to the action of a cylinder•Etymology: 1560–70; < L cylindrus < Gk kýlindros roller, cylinder, akin to kylíndein to roll
From formal English to slang. 2014.