When people play a game like football, they sometimes all come together and push against each other to try to get the ball. This is called a ruck.
Rucks are a normal part of the game and happen a lot during the game.
Examples:
During the game, there was a big ruck for the ball.
The players got into a ruck to try to get the ball.
In the ruck, the players are all pushing and shoving.
The ruck looked like a big group hug, but they were really fighting for the ball.
The ruck was so big, it looked like all the players were stuck together.
The ruck was the most exciting part of the game.