used for filling cracks or holes in a surface
"The plumber mixed some sand and cement to use as filler for the crack in the bathroom floor."
100 filler equal 1 forint in Hungary
"In Hungary, a collection of one hundred fillers is equivalent to just one forint."
copy to fill space between more important articles in the layout of a magazine or newspaper
"The editor added several filler stories about local weather patterns to pad out the morning edition before the main political analysis."
anything added to fill out a whole
"some of the items in the collection are mere makeweights"
the tobacco used to form the core of a cigar
"The master cutter carefully trimmed away the excess filler from the center of the handmade cigar before rolling it tight."
One who fills.
"The new intern was hired as a filler to cover the sales team's sudden absence."
A surname.
"Mr. Filler was named after his great-grandfather, a man whose family name became synonymous with filling gaps in conversation."
The word filler is formed by adding the suffix -er to the verb fill. It originally referred simply to something that fills a space or container.