Webster's Revised Unabridged Dictionary

1. (

*n.*) A numerical character zero; also a cryptographic system or key where each letter or digit replaces another.

2. (*n.*) One who, or that which, has no weight or influence.

3. (*n.*) A character in general, as a figure or letter.

4. (*n.*) A combination or interweaving of letters, as the initials of a name; a device; a monogram; as, a painter's cipher, an engraver's cipher, etc. The cut represents the initials N. W.

5. (*n.*) A private alphabet, system of characters, or other mode of writing, contrived for the safe transmission of secrets; also, a writing in such characters.

6. (*a.*) of the nature of a cipher; of no weight or influence.

7. (*v. i.*) To use figures in a mathematical process; to do sums in arithmetic.

8. (*v. t.*) To write in occult characters.

9. (*v. t.*) To get by ciphering; as, to cipher out the answer.

10. (*v. t.*) To decipher.

11. (*v. t.*) To designate by characters.