Ruck

noun
1.
a large number or quantity; mass.
2.
the great mass of undistinguished or inferior persons or things.
noun
1.
a fold or wrinkle; crease.
verb (used with or without object)
2.
to make or become creased or wrinkled.
noun
1.
a large number or quantity; mass, esp of ordinary or undistinguished people or things
2.
(in a race) a group of competitors who are well behind the leaders at the finish
3.
(rugby) a loose scrum that forms around the ball when it is on the ground
4.
(Australian rules football) the three players, two ruckmen and a rover, that do not have fixed positions but follow the ball closely
verb
5.
(intransitive) (rugby) to try to win the ball by advancing over it when it is on the ground, driving opponents backward in the process
noun
1.
a wrinkle, crease, or fold
verb
2.
(usually foll by up) to become or make wrinkled, creased, or puckered
noun
1.
(prison slang) a fight
noun
1.
(military, slang) a rucksack