to chastise or berate someone
I chewed him out when he said he wouldn't come to the party.
by Air November 11, 2002
Be warned: Despite the similar meanings of the root words, to chew someone out is something VERY DIFFERENT from *eating* them out.
My mom ate me out last night... I mean chewed me out.
by asdsafsdjkfreui August 14, 2005