• A numeric character.
  • Any text character.
  • A combination or interweaving of letters, as the initials of a name.
  • A method of transforming a text in order to conceal its meaning.
  • A cryptographic system using an algorithm that converts letters or sequences of bits into ciphertext.
  • Ciphertext; a message concealed via a cipher.
  • A grouping of three digits in a number, especially when delimited by commas or periods:
  • 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.



  • 14th century. From Middle English cifre, from Old French cyfre, cyffre (French chiffre), ultimately from Arabic صِفْر ("zero, empty"), from صَفَرَ. zero. Sense 9 may be a different word.

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