touchline
US /ˈtʌtʃ.laɪn/
UK /ˈtʌtʃ.laɪn/

1.
боковая линия
either of the two lines that mark the long sides of a soccer field or other sports field
:
•
The ball went out over the touchline.
Мяч вышел за боковую линию.
•
The coach stood near the touchline, shouting instructions.
Тренер стоял у боковой линии, выкрикивая инструкции.