Knob: meaning, definitions and examples

A small, rounded object that can be turned or pulled, commonly found on doors or control panels.

• She turned the door knob and stepped inside.
• Adjust the volume by turning the knob to the right.

A part of an object designed to be held by your hand, allowing you to carry, move, or use the object.

• She grabbed the handle of the suitcase and started walking.
• The pot has a long handle to make it easier to lift.

The part of an object that you hold onto with your hand to control the object, often emphasizing the action of holding tightly.

• He tightened his grip on the steering wheel.
• Make sure you have a firm grip on the rope.

A small, round object that is pressed to operate or control a machine or device.

• Press the button to start the washing machine.
• He wore a coat with shiny brass buttons.

Generally refers to a rounded handle, as on a door or a piece of equipment, often used for turning or adjusting something.

• Turn the knob to increase the volume.
• He turned the door knob slowly.

An instrument for controlling or regulating a machine, often circular, typically used for tuning or setting levels.

• Turn the dial to find your favorite radio station.
• Adjust the temperature by moving the dial.

A device for making and breaking the connection in an electric circuit, often used to turn something on or off.

• Flip the switch to turn on the lights.
• He installed a new light switch in the hallway.

Refers to a device or mechanism used to command or regulate the function of a machine or system. It can also mean having power or influence over something.

• She had complete control over the settings.
• The remote control is on the table.

Typically refers to a rounded handle or control switch. Commonly used in the context of doors or electronic devices.

• He turned the knob to open the door
• The volume knob on the radio was hard to turn

Often used to describe a small raised area on a surface caused by a blow or pressure. It can also be metaphorical, referring to a minor problem or obstacle.

• She had a bump on her head from the fall
• There was a bump in the road that made the car jump

Describes something that protrudes or sticks out from a surface. Often used in formal or descriptive writing.

• The castle had a protuberance that jutted out over the edge of the cliff
• Her bones were thin, with protuberances that made her look frail

Usually refers to a small lump or swelling, often in a medical or scientific context (e.g., skin, plants).

• The doctor examined the nodule on his neck
• The plant's roots had small nodules that stored nutrients