How to sign: 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";
Similiar / Same: beat up, beat
Within this category: belabour, cane, clobber, flog, knock cold, pistol-whip, rough up, soak, spank, strong-arm, thrash