2. (noun)zero, 0, nought, cipher, cypher a mathematical element that when added to another number yields the samenumber
3. (noun)nothing, nil, nix, nada, null, aught, cipher, cypher, goose egg, naught, zero, zilch, zip, zippo 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"
4. (noun)cipher, cypher, nobody, nonentity a person of no influence
6. (verb)code, encipher, cipher, cypher, encrypt, inscribe, write in code convertordinarylanguage into code "We should encode the message for security reasons"
7. (verb)calculate, cipher, cypher, compute, work out, reckon, figure make a mathematical calculation or computation