Meaning

• A numeric character.

• Any text character.

• A combination or interweaving of letters, as the initials of a name; a device; a monogram.

  "a painter's cipher, an engraver's cipher, etc."

• A method of transforming a text in order to conceal its meaning.

  "The message was written in a simple cipher. Anyone could figure it out."

• A cryptographic system using an algorithm that converts letters or sequences of bits into ciphertext.

• Ciphertext; a message concealed via a cipher.

  "The message is clearly a cipher, but I can't figure it out."

• A grouping of three digits in a number, especially when delimited by commas or periods:

  "The probability is 1 in 1,000,000,000,000,000 — a number having five ciphers of zeros."

• A fault in an organ valve which causes a pipe to sound continuously without the key having been pressed.

• A hip-hop jam session.

• The path (usually circular) shared cannabis takes through a group, an occasion of cannabis smoking.

• Someone or something of no importance.

• Zero.

Meaning

• To calculate.

  "I never learned much more than how to read and cipher."

• To write in code or cipher.

• Of an organ pipe: to sound independent of the organ.

• To decipher.