cypher

definition: a message written in a secret code
example: I could not decode the cipher that was sent to me.
speech part: noun
synonyms:
definition: a secret method of writing
example: I taught my allies the cipher.
speech part: noun
synonyms: cryptograph
definition: a person of no influence
example: At work, I'm just a cipher.
speech part: noun
synonyms: nobody nonentity
definition: a quantity of no importance
example:
speech part: noun
synonyms: nothing
definition: a mathematical element that when added to another number yields the same number
example: Zero is an example of a cipher.
speech part: noun
synonyms: zero
definition: to make a mathematical calculation or computation
example: I ciphered the result quite easily.
speech part: verb
synonyms: figure
definition: to convert ordinary language into code
example: I ciphered the message so my enemies could not read my plans.
speech part: verb
synonyms: code inscribe encipher encrypt write in code

How cypher is being used?