noun (n)

• exercising by repeatedly assuming a crouching position with the knees bent; strengthens the leg muscles(noun.act)

  Synonym:
  knee bend, squat
  

  source: wordnet30
• the act of assuming or maintaining a crouching position with the knees bent and the buttocks near the heels(noun.act)

  Synonym:
  squat
  

  source: wordnet30