the multitude or mass of undistinguished, ordinary people or things; common run
noun, transitive verb, intransitive verb
crease, fold, wrinkle, or pucker
See ruck in American Heritage Dictionary 4
(rŭk)
noun
a. A multitude; a throng.
b. The undistinguished crowd or ordinary run of persons or things.
People who are followers, not leaders.
Sports
a. A play in Rugby in which a mass of players gathers around a ball dropped by a tackled ball carrier, with each player attempting to gain possession of the ball by kicking it to a teammate.
b. The mass of players during such a play. Also called loose scrum.