cylinder
A 3D shape with two flat circles on top and bottom and a curved side joining them.
A three-dimensional solid with two identical, parallel circular ends connected by a curved surface at a constant distance from the center line.
A strong metal tube-shaped container that holds gas or liquid, usually under pressure.
A strong metal container in the shape of a cylinder, used to store gas or liquid, especially under high pressure.
The round space inside an engine where a part called a piston moves and fuel burns to make power.
In an internal combustion engine, a cylindrical chamber in which a piston moves up and down and in which fuel is burned to produce power.
In a revolver gun, the round turning part that holds the bullets.
In a revolver, the rotating cylindrical part that contains a series of chambers for cartridges and turns to align each cartridge with the barrel.
A round tube-shaped part inside a machine that moves or turns and helps the machine work.
A cylindrical mechanical part, especially one that rotates or houses moving parts, used in various machines such as locks, pumps, and printing presses.
- Base: cylinder
- Plural: cylinders
firing on all cylinders
1working at full power
To work or perform with the highest energy and ability, without any problems.
- The team was really firing on all cylinders during the second half of the game.
- After a good night’s sleep, my brain is finally firing on all cylinders again.
four-cylinder engine
1engine that has four cylinders
A car engine that has four separate cylinders inside it.
- Most compact cars come with a four-cylinder engine.
- A modern four-cylinder engine can be both powerful and efficient.
not firing on all cylinders
1not thinking or working well
To not be thinking clearly or working as well as you usually do.
- I’m sorry, I’m really not firing on all cylinders this morning.
- The team clearly wasn’t firing on all cylinders after the long flight.
running on all cylinders
1operating at full efficiency
To be working or operating in the best and most complete way possible.
- The company isn’t running on all cylinders yet, but sales are improving.
- By the time of the final rehearsal, the band was running on all cylinders.