tko

/ˌtiːˌkeɪˈoʊ/
noun
  1. A victory in boxing when a fighter is unable to continue but has not been knocked out cold; technical knockout.
    • The boxer's corner threw in the towel, resulting in a TKO for the champion.
    • The referee stopped the fight in the fifth round, awarding the win by TKO.
    • He suffered a TKO after taking too many punches to the head.