Definitions
1.nounA numeric character.
2.nounAny text character.
3.nounA combination or interweaving of letters, as the initials of a name; a device; a monogram."a painter's cipher, an engraver's cipher, etc."
4.nounA method of transforming a text in order to conceal its meaning."The message was written in a simple cipher. Anyone could figure it out."
5.nounA cryptographic system using an algorithm that converts letters or sequences of bits into ciphertext.
6.nounCiphertext; a message concealed via a cipher."The message is clearly a cipher, but I can't figure it out."
7.nounA 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."
8.nounA fault in an organ valve which causes a pipe to sound continuously without the key having been pressed.
9.nounA hip-hop jam session.
10.nounThe path (usually circular) shared cannabis takes through a group, an occasion of cannabis smoking.
11.nounSomeone or something of no importance.
12.nounZero.