<p><strong>Noun</strong></p><ul><li>a secret method of writing or recording data, such as by substituting or adding letters or numbers, using specially formed symbols, or the like; code: cryptography.</li><li>writing, or a piece of writing, done by a secret method; a coded message.</li><li>the key to a secret method of writing.</li><li>someone or something that is not understood; mystery or enigma.</li><li>a person or thing of no influence or importance; nonentity.</li><li>usually cypher.</li><li>a performance by a group of rappers, hip-hop artists, or break dancers who take turns improvising individual verses, dances, etc.</li><li>an individual verse, dance, etc., that is part of such a performance.</li><li>any of the Arabic numerals, such as 1, 2, or 3, or any number written with such numerals, such as 476.</li><li>Arabic numerical notation collectively.</li><li>a combination of letters, such as the initials of a name, in one design; monogram.</li></ul><p><strong>Verb</strong></p><ul><li>to use figures or numerals arithmetically; do arithmetic.</li><li>to write messages in or as if in a secret code.</li><li>to convert into code; encrypt.</li><li>to figure out the meaning of; interpret or decode (often used with out).</li><li>to calculate numerically; figure (often used with out).</li></ul>