a procedure for putting an out-of-bounds ball back in play, whereby a player outside the touchline tosses the ball high and between two lines of opposing forwards lined up perpendicular to the touchline.
Origin of line-out
First recorded in 1885–90; noun use of verb phrase line out to form a line, line up
rugby Unionthe method of restarting play when the ball goes into touch, the forwards forming two parallel lines at right angles to the touchline and jumping for the ball when it is thrown in
