What is "lineout"

alt. 1 (context rugby English) a set piece where the hooker throws the ball into play between a row of players from each team. 2 (context rugby English) the line of players in a lineout 3 (context baseball English) an out produced by catching a line drive n. 1 (context rugby English) a set piece where the hooker throws the ball into play between a row of players from each team. 2 (context rugby English) the line of players in a lineout 3 (context baseball English) an out produced by catching a line drive