| 1. | a bell tower, either attached to a church or other building or standing apart. |
| 2. | the part of a steeple or other structure in which a bell is hung. |
| 3. | a frame of timberwork that holds or encloses a bell. |
| 4. | Slang. head; mind: a belfry full of curious notions. |
| 5. | have bats in one's belfry. bat 2 (def. 3). |
