Tap may refer to any of the following:
1. When referring to a touch screen, a tap is a gentle touch or tap of the screen with a finger once to open an app or select an object. If you are more familiar with a computer, a tap is the same as a single click on a mouse.
Like a mouse, there are also programs that support the ability to double-tap, which means tapping two times on the screen. Some phones also support a tap and hold, which is tapping the screen with your finger and holding it in place to get additional options.