Glitches meaning : A problem affecting function. An unexpected behavior in an electrical signal, especially if the signal spontaneously returns to expected behavior after a period of time. A bug or an exploit. A genre of experimental electronic music since the 1990s, characterized by a deliberate use of sonic artifacts that would normally be viewed as unwanted noise. (especially of machines) To experience an intermittent, unexpected, malfunction. To perform an exploit or recreate a bug while playing a video game.