Lineout is a rugby term that refers to a method of restarting play after the ball is knocked out of bounds. While 'lineout' is the standard term used in rugby, there are a number of synonyms that can be used to describe this particular play. Some of the most common synonyms for the word 'lineout' include throw-in, throw-up, and touchline. Additionally, other terms such as set-piece or scrum can describe the general concept of restarting play in rugby, although these terms refer to a different type of restart altogether. Regardless of the specific terminology used, the lineout remains an integral part of the game for rugby players at all levels.