To interpret by the use of a key, as something written in cipher; make out by discovering the key to.To succeed in reading, as what is written in obscure, partially obliterated, or badly formed characters.To discover or explain the meaning of, as of something that is obscure or difficult to be traced or understood.To describe or delineate.To find out; detect; discover; reveal.To write in cipher; conceal by means of a cipher or other disguise.=Syn. 1–3. To interpret, make out, unravel.n. A description.n. A deciphered cipher; a translated version of a cipher.