Pen name (3,2,5)
'pen name' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for nom de plume that I've seen before include "False name" , "Assumed name" , "George Sand?" , "Literary pseudonym" , "Pen name" .)
'pen name?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sty that I've seen before include "Swinish place" , "Pig home or eye sore" , "Piggery" , "Farmyard enclosure" , "Filthy place" .)