polygon

/หˆpษ‘liษกษ‘n/
noun
  1. 1

    A plane figure bounded by edges that are all straight lines.

  2. 2

    The boundary of such a figure.

  3. 3

    (more generally) A figure comprising vertices and (not necessarily straight) edges, alternatingly.

  4. 4

    Such a figure and its interior, taken as a whole.

Source: https://en.wiktionary.org/wiki/polygon