| a bar of iron bent into the shape of a U, fitted with a screw thread and nut at each end. |

| U-bolt (yōō'bōlt') n. A bolt shaped like the letter U, fitted with threads and a nut at each end. |
| Main Entry: | U-bolt |
| Part of Speech: | n |
| Definition: | a bolt shaped like the letter "U," with threading on both straight sections |
| Etymology: | 1884-89 |