polyfill

/P AA1 L AH0 F IH1 L/
noun
  1. 1

    (web development) A plugin that provides the functionality of newer browsers to older versions.

  2. 2

    A synthetic textile used for bulk or insulation, e.g., in stuffed animals or coats.

  3. 3

    (computer graphics) An algorithm to fill a polygon with a particular color.

verb
  1. 1

    (web development, transitive, intransitive) To create or apply a polyfill.