countable noun. Buttons are small hard objects sewn on to shirts, coats, or other pieces of clothing. You fasten the clothing by pushing the buttons through holes called buttonholes.
Position your button in line with the button hole. Push your needle and thread through the underside of the fabric until it stops at the knot. Pass the needle through one button hole and then the other. Push your needle and thread back through the fabric until the button is pulled flat against the fabric.
A flat button is a text label displayed on a (zero elevation) Material widget that reacts to touches by filling with color. Use flat buttons on toolbars, in dialogs, or inline with other content but offset from that content with padding so that the button’s presence is obvious.
In computing, the term button (sometimes known as a command button or push button) refers to any graphical control element that provides the user a simple way to trigger an event, like searching for a query at a search engine, or to interact with dialog boxes, like confirming an action.