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.]
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