button
UK: ˈbʌtn | US: ˈbʌtn
n. a small fastener used to join parts of clothing
n. a small round object pressed to operate a device
vt. to fasten or close with buttons
The word "button" traces back to Old French boton, which referred to a knob or bud—something that protrudes. The term evolved from the verb bouter (to push), reflecting the function of buttons as protrusions used to fasten garments. The diminutive suffix -ton emphasizes its small size. Over time, the meaning expanded to include mechanical buttons (e.g., on devices) due to their similar protruding shape and pressing action.
She sewed a shiny button onto her coat.
Press the red button to start the machine.
He struggled to button his shirt with one hand.
The elevator button lit up when touched.
The remote control has a missing button.