pas·tille (pă-stēl) also pas·til (păstĭl)
1. A small medicated or flavored tablet; a troche.
2. A tablet containing aromatic substances that is burned to fumigate or deodorize the air.
3. A pastel paste or crayon.
[French, from Spanish pastilla, perfume pellet, and Italian pastillo, pastille, both from Latin pāstillus, little loaf, medicine tablet, diminutive of pānis, bread; see pā- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.