Answer: cipher

AnswerCrossword Clue
CIPHERSecret writing
cipherthe symbol (0) for zero
cipherto work at arithmetic, also CYPHER
ciphersecret writing
CIPHERMessage written in a secret code
CIPHERGo figure?
CIPHERGoose egg
CIPHERZero
CIPHERHard-to-read writing
CIPHER0
CIPHER"Zxbrgd," probably
CIPHERNonentity
CIPHERSolve by arithmetic.
CIPHEREncryption
CIPHERCoded message
CIPHERGo figure
CIPHERThing to be cracked
CIPHERWritten code
CIPHER0, or a code
CIPHERO