1. either of the two lines that mark the long sides of a soccer field
Usage: sports

Examples

• The ball went out of bounds over the touchline.
• The coach stood on the touchline shouting instructions to his players.
• The referee signaled for a throw-in when the ball crossed the touchline.
• Players must stay behind the touchline during a throw-in.
• The assistant referee ran along the touchline following the play.
• The ball rolled slowly toward the touchline before stopping just inside the field.