Cipher (4)
'cipher' is the definition.
(I know that cipher can be written as code)
This is the entire clue.
(Other definitions for code that I've seen before include "System of signals" , "Collection of laws" , "(Computer) programming instructions" , "See 21 Across" , "Ethical standards" .)
'cipher' is the definition.
(I know that cipher can be written as zero)
This is all the clue.
(Other definitions for zero that I've seen before include "Very bad visibility" , "Duck" , "A very low temperature" , "Nadir" , "hour for action" .)
'cipher' is the definition.
(I know that cipher is a kind of encode)
This is all the clue.
(Other definitions for encode that I've seen before include "transform with substitutions?" , "Turn message into secret symbols" , "Put (message) into ciphers" , "Put into cipher" , "Put into cypher" .)