1. A cone-shaped sleeve used for holding circular or rodlike pieces in a lathe or other machine.
2. A metal collar used in watchmaking to join one end of a balance spring to the balance staff.
3. A circular flange or rim, as in a ring, into which a gem is set.
[French, diminutive of col, collar, from Latin collum, neck; see kwel-1 in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.