Adjective beat up has 1 sense
  1. battered, beat-up, beaten-up - damaged by blows or hard usage; "a battered old car"; "the beaten-up old Ford"
    Antonym: undamaged (indirect, via damaged)
,Verb beat up has 2 senses
  1. beat, beat up, work over - give a beating to; subject to a beating, either as a punishment or as an act of aggression; "Thugs beat him up when he walked down the street late at night"; "The teacher used to beat the students"
    Sample sentence:
    They want to beat up the prisoners
  2. beat up, drum up, rally - gather; "drum up support"
    --2 is one way to collect, pull in
    Sample sentences:
    Somebody ----s something
    Something ----s something
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