From Longman Dictionary of Contemporary Englishpigpenpig‧pen /ˈpɪɡpen/ noun [countable] American English 1 TAa building where pigs are kept SYN pigsty2 informalUNTIDY a very dirty or untidy place SYN pigsty
Examples from the Corpus
pigpen• The next man was a pigpen, in gray filthy overalls, and the dirt on him seemed about seven years old.• Both policemen jumped out of the pigpen and ran toward the southern wall in search of the dark figure.PigpenPigpen a character in the US cartoon strip called Peanuts, who is very dirty and always has a cloud of dirt all around him 