Source : Webster's Revised Unabridged Dictionary (1913)

Cypher \Cy"pher\ (s?"f?r), n. & v.
   See {Cipher}.

Source : WordNet®

cypher
     n 1: a mathematical element that when added to another number
          yields the same number [syn: {zero}, {0}, {nought}, {cipher}]
     2: a quantity of no importance; "it looked like nothing I had
        ever seen before"; "reduced to nil all the work we had
        done"; "we racked up a pathetic goose egg"; "it was all
        for naught"; "I didn't hear zilch about it" [syn: {nothing},
         {nil}, {nix}, {nada}, {null}, {aught}, {cipher}, {goose
        egg}, {naught}, {zero}, {zilch}, {zip}]
     3: a person of no influence [syn: {cipher}, {nobody}, {nonentity}]
     4: a secret method of writing [syn: {cipher}, {cryptograph}, {secret
        code}]
     5: a message written in a secret code [syn: {cipher}]
     v 1: convert ordinary language into code; "We should encode the
          message for security reasons" [syn: {encode}, {code}, {encipher},
           {cipher}, {encrypt}, {inscribe}, {write in code}] [ant:
           {decode}]
     2: make a mathematical calculation or computation [syn: {calculate},
         {cipher}, {compute}, {work out}, {reckon}, {figure}]