What a spy cracks (4)
I believe the answer is:
code
(Other definitions for code that I've seen before include "Secret system of letters. words etc" , "It may be impossible to read" , "Cryptograph" , "Digest of laws" , "regulations" .)
I believe the answer is:
code
(Other definitions for code that I've seen before include "Secret system of letters. words etc" , "It may be impossible to read" , "Cryptograph" , "Digest of laws" , "regulations" .)