Definition of assistant referee in English:

assistant referee

noun

another term for referee's assistant
‘Fernandez was booked following advice from an assistant referee.’
  • ‘He also reserved some criticism for assistant referees at the World Cup.’
  • ‘The game was in danger of being abandoned until he took over the line in place of an injured assistant referee.’
  • ‘Speed endurance and good recovery in between intense periods of exercise are vital for referees and assistant referees.’
  • ‘Curtis did look suspiciously offside but there was no flag from the assistant referee despite Sutton Coldfield's extended protests.’