IPA: /ˈtʌʧlaɪn/
KK: /ˈtʌʧlaɪn/
The lines that mark the sides of a sports field, specifically in soccer and rugby, where the game is played.
The player ran along the touchline to avoid being tackled.
Touchline → It is formed from "touch" (from Old English *tōccean*, meaning to come into contact with) and "line" (from Latin *linea*, meaning a string or line). The word "touchline" refers to the boundary line on a playing field where the ball must be kept in play.
Think of coming into 'contact' ('touch') with a 'line' that marks the edge of the playing area — that's what a touchline is.