"Not to mention . . ." (4)
'not to mention' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for plus that I've seen before include "Added extra" , "Benefit" , "In addition, also" , "being a little cross" , "Advantage; also" .)
'not to mention' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for also that I've seen before include "revolutionary a part for Yugoslavia" , "To boot" , "an indication of more to come" , "Item" , "As well, in addition" .)