| 1. | the sound made by a bell rung slowly, esp. for a death or a funeral. |
| 2. | a sound or sign announcing the death of a person or the end, extinction, failure, etc., of something: the knell of parting day. |
| 3. | any mournful sound. |
| 4. | to sound, as a bell, esp. a funeral bell. |
| 5. | to give forth a mournful, ominous, or warning sound. |
| 6. | to proclaim or summon by, or as if by, a bell. |

| Main Entry: | knell1 |
| Part of Speech: | n |
| Definition: | a bell struck slowly and solemnly; this ominous sound |
| Etymology: | Old English cnyllan |
| Main Entry: | knell1 |
| Part of Speech: | v |
| Definition: | to summon or announce with a bell; toll |
| Etymology: | Old English cnyllan |
| Usage: | transitive |
| Main Entry: | knell2 |
| Part of Speech: | n |
| Definition: | an indication of failure |
| Etymology: | Old English cnyllan |
| Main Entry: | knell2 |
| Part of Speech: | v |
| Definition: | to ring slowly and solemnly; to make an ominous sound |
| Etymology: | Old English cnyllan |
| Usage: | transitive |