touchlines
nounUK /ˈtʌtʃlaɪnz/
US /ˈtʌtʃlaɪnz/
The lines on the sides of a sports field that show where the playing area ends.
The ball rolled over the touchlines and the referee stopped the game.
OTHER MEANINGS
2. The areas just outside the official playing area where coaches and substitutes stay.
The coach shouted instructions from the touchlines.
3. Issues or topics that people are talking about but that are not central to a discussion.
The debate stayed on the touchlines of the main problem.
4. Lines marking the outer limits of a rugby or soccer field.
Players must keep the ball inside the touchlines.