a small disc or knob sewn on to a garment, either to fasten it by being pushed through a slit made for the purpose or for decoration

a small device on a piece of electrical or electronic equipment which is pressed to operate it

a badge bearing a design or slogan and pinned to clothing

fasten (clothing) with buttons

I buttoned my shirt and knotted my tie

he buttoned up his jacket

stop talking

a nickname for a liveried pageboy, now normally only in pantomimes