What is the meaning of Ruck?

A throng or crowd of people or things; a mass, a pack.

In Australian rules football

  1. A contest in games in which the ball is thrown or bounced in the air and two players from opposing teams attempt to give their team an advantage, typically by tapping the ball to a teammate.
  2. A player who competes in said contests; a ruckman or ruckwoman.
  3. Either of a ruckman or a ruck rover, but not a rover.
  4. Any one of a ruckman, a ruck rover or a rover; a follower.

A contest in games in which the ball is thrown or bounced in the air and two players from opposing teams attempt to give their team an advantage, typically by tapping the ball to a teammate.

A player who competes in said contests; a ruckman or ruckwoman.

Either of a ruckman or a ruck rover, but not a rover.

Any one of a ruckman, a ruck rover or a rover; a follower.

The situation formed when a player carrying the ball is brought to the ground and one or more members of each side are engaged above the ball, trying to win possession of it; a loose scrum.

The common mass of people or things; the ordinary ranks.

An argument or fight.

To act as a ruck in a stoppage in Australian rules football.

To contest the possession of the ball in a ruck.

To crease or fold.

To become creased or folded.

A crease, a wrinkle, a pucker, as on fabric.

To cower or huddle together; to squat; to sit, as a hen on eggs.

Obsolete form of roc.

A rucksack; a large backpack.

To carry a backpack while hiking or marching.

A small heifer.

ruck

rock

Source: wiktionary.org