beat-up

(verb) give a beating to; subject to a beating, either as a punishment or as an act of aggression. Synonyms: beat, beat up, work over. Examples: "Thugs beat him up when he walked down the street late at night." "The teacher used to beat the students."

(verb) gather. Synonyms: beat up, drum up, rally. Example: "Drum up support."

(adj) damaged by blows or hard usage. Synonyms: battered, beaten-up. Examples: "A battered old car." "The beaten-up old ford."