beat up is a verb meaning "give a beating to; subject to a beating, either as a punishment or as an act of aggression". It carries 2 recorded senses.
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”
Definitions, synonyms and semantic relations for beat up come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.