[kol-it] 
noun, verb, -let⋅ed, -let⋅ing.| 1. | a collar or enclosing band. |
| 2. | the enclosing rim within which a jewel is set. |
| 3. | a slotted cylindrical clamp inserted tightly into the tapered interior of a sleeve or chuck on a lathe to hold a cylindrical piece of work. |
| 4. | Horology. the tiny collar that supports the inner terminal of a hairspring. |
| 5. | to set (a gem or other stone) in a collet. |
| col·let (kŏl'ĭt) n.
[French, diminutive of col, collar, from Latin collum, neck; see kwel-1 in Indo-European roots.] |
ɪt