filler - definition and synonyms

noun 

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/ˈfɪlə(r)/
singularfiller
pluralfillers
  1. 1
    [uncountable] a substance used for repairing holes in walls and in wood
  2. 2
    [countable] something that you add to a story, broadcast, article, film etc only because you have space or time to fill
  3.   From our crowdsourced Open Dictionary
    3
    (also dermal filler) a substance injected into the face to remove wrinkles

    All three of these fillers are good for treating the laugh lines.

    Submitted from United Kingdom on 23/10/2012
  4.   From our crowdsourced Open Dictionary
    4
    in linguistics, a sound or word used to fill a gap in speech

    Jill Wagner, a linguist at Temple University in Philadelphia, recently published a study that found filler words to be beneficial.

    Submitted from United Kingdom on 23/10/2012