Nada (3)
'nada' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for nil that I've seen before include "Non-existent" , "Don't despair - . . . desperandum" , "Score of nought" , "0" , "Zero, zilch" .)
'nada' is the definition.
(I know that nada can be written as zip)
This is all the clue.
(Other definitions for zip that I've seen before include "Type of fastener" , "Sound of bullet passing" , "closer" , "drive" , "It fastens" .)