Definition of “cipher” - English Dictionary

“cipher” in American English

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ciphernoun [ C ]

us /ˈsɑɪ·fər/

cipher noun [ C ] (SECRET WRITING)

a system of writing that most people cannot understand, so that the message is secret; a code:

We spent a lot of time figuring out the enemy’s cipher.

cipher noun [ C ] (NOTHING)

a zero, or a person or thing that has no value or importance:

In the hands of a lesser actor, the role could have easily been a cipher.

(Definition of “cipher” from the Cambridge Academic Content Dictionary © Cambridge University Press)