check mark

/CH EH1 K M AA1 R K/
noun
  1. 1

    A mark (✓) made to indicate agreement, correctness or acknowledgement.

    Put a check mark in the box corresponding to the correct answer.

  2. 2

    In long jump, javelin and similar events, little mark alongside the runway which helps the athlete to set their steps just right for their performance.

Synonyms

Source: https://en.wiktionary.org/wiki/check%20mark