screen saver
noun Computers.
a program that displays a constantly shifting pattern on a screen when the computer is idle, originally used to prevent damage to the screen through continuous display of the same image but now used primarily for decoration.
Also
screen·sav·er
[skreen-sey-ver] /ˈskrinˌseɪ vər/
Words nearby screen saver
screen grid,
screen memory,
screen name,
screen pass,
screen process,
screen saver,
screen test,
screen time,
screen trading,
screen-print,
screen-printing