Turn In Meaning

(soccer) To convert a goal using a turning motion of the body.

Example:   He turned in his paperwork to the main office.
  The thief finally turned himself in at the police station.
  He turned his brother-in-law in for seeing him assault a customer.
  My nosey next door neighbor turned me in for building my garage without a permit.
  I'm tired, so I think I'll turn in early tonight.
2011 January 18, Daniel Taylor, “Manchester City 4 Leicester City 2”[1], Guardian Online:
  At that point Leicester were playing with drive and ambition but they were undone by two goals in three minutes. First, Vieira turned in a rebound after the defender Souleymane Bamba had blocked David Silva's shot on the line.