FILLER

[noun] [C or U]A filler is a substance that is used to fill small holes and cracks, esp. in wood and walls.A filler is also something such as a short text or drawings used to fill extra space in a magazine or newspaper, or talk, music, etc. used to fill extra time in a radio or television broadcast.The station always has a filler ready in case the speech/ceremony/tennis match ends earlier than expected.