button

From WikiWord, the free dictionary

/ˈbʌtn̩/ English

Definitions

One who adjusts, especially for the insurance industry's employment title "loss adjuster" (or "claims adjuster" in the United States).

A knob or disc that is passed through a loop or (buttonhole), serving as a fastener.“April fastened the buttons of her overcoat to keep out the wind.”
A mechanical device meant to be pressed with a finger in order to open or close an electric circuit or to activate a mechanism.“Pat pushed the button marked "shred" on the blender.”
An on-screen control that can be selected as an activator of an attached function.“Click the button that looks like a house to return to your browser's home page.”
A badge worn on clothes, fixed with a pin through the fabric.“The politician wore a bright yellow button with the slogan "Vote Smart" emblazoned on it.”

In a violin-family instrument, the carved wooden plug which sits in the bottom block of the instrument.