Sty (3)
'sty' is the definition.
(I know that sty can be written as pigpen)
This is all the clue.
(Other definitions for pigpen that I've seen before include "that accommodates swine" , "Sty (American)" , "Sty for swine" , "tip" .)
'sty' is the definition.
(both can mean an animal enclosure)
This is all the clue.
(Other definitions for pen that I've seen before include "'The ... is mightier than the sword'" , "See 20" , "Writing implement" , "American jug?" , "Writing tool" .)