sitter

/S IH1 T ER0/
noun
  1. 1

    Someone who sits, e.g. for a portrait.

  2. 2

    One employed to watch or tend something; a babysitter, housesitter, petsitter, etc.

    โ€œIt's always such a pain to get a sitter on short notice.โ€

  3. 3

    A participant in a sรฉance.

  4. 4

    A broody hen.

  5. 5

    A very easy scoring chance.

    โ€œHow could he miss that? It was an absolute sitter!โ€

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