Wallabies - the national team of Australia.

Weakside - from a set piece, ruck or maul, the short side of the field. Also called the Blindside.

Webb Ellis Trophy - the trophy awarded the mens champions of the Rugby World Cup 15s.

Wing/Winger - either of the two backs wearing No. 11 or No. 14. Each will normally stay on the same side of the back line they are on throughout the match and are typically expected to be the fastest sprinters in the side. Wingers also have key duties during defense helping the fullback cover kicks and counterattacking.

Wing forward - either of the two forwards wearing No. 6 or No. 7. Also called wing forwards or breakaways they bind to the scrum outside of the locks just behind the outside hip of the props. They can play always on the same side of the scrum or can specialize on either the weakside or strongside. The players with the fewest set responsibilities, their job is to aggresively pursue the ball, gain possesion, and take off running. Also known as Flanker.

XV - a common identifier for the first fifteen selected players of a club or team. A team can also use XV in their name, prounounced as fifteen.

Yellow card - the card shown by a referee to a player for foul play or persistent infringement, resulting in that player being expelled from the field of play to the "Sin Bin" for 10 minutes. If a player receives two yellow cards in the same game he is expelled from the field of play for the remainder of that game.