| 1. | to make out the meaning of (poor or partially obliterated writing, etc.): to decipher a hastily scribbled note. |
| 2. | to discover the meaning of (anything obscure or difficult to trace or understand): to decipher hieroglyphics. |
| 3. | to interpret by the use of a key, as something written in cipher: to decipher a secret message. |
| 4. | Obsolete. to depict; portray. |