Decipher

v. t.
  1. To translate from secret characters or ciphers into intelligible terms; as, to decipher a letter written in secret characters.
  2. To find out, so as to be able to make known the meaning of; to make out or read, as words badly written or partly obliterated; to detect; to reveal; to unfold.
  3. To stamp; to detect; to discover.