It means nothing! (4)
'it means nothing' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for zero that I've seen before include "Naught" , "Uncompromising application of the law against antisocial behaviour" , "Japanese fighter" , "Nowt" , "terribly cold" .)
'it means nothing' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for nil that I've seen before include "Don't despair - . . . desperandum" , "Nothing, no value" , "Lacking value" , "Zero, zilch" , "Nothing, no score" .)