pastille

noun

1. A flavoured candy or sweet, often round and somewhat flat in shape.
2. Any small, usually round and somewhat flat, granular piece of material; a tablet.

   “Watercolors of professional quality come in small pastilles of dry pigment, in pans of semi-moist paint, or in tubes or bottles of liquid watercolor.”

3. (historical, specifically)Any small, usually round and somewhat flat, granular piece of material; a tablet.

   “At the end he felt faint and sick, and having lit some Algerian pastilles in a pierced copper brazier, he bathed his hands and forehead with a cool musk-scented vinegar.”

4. (historical)A medicinal pill, originally made of compressed herbs.

   “In the desperate search for amatory satisfactions, the most monstrous ingredients have throughout the ages, been sought and compounded into electuaries and pastilles, philtres and ointments.”

5. A candy- or sweet-like lozenge, which, when sucked, releases substances that soothe a sore throat, and sometimes vapours to help unblock the nose or sinuses.
6. (alt-of, nonstandard, obsolete)Nonstandard spelling of pastel (“a crayon made from a type of dried paste; a drawing made using such crayons”).

   “Best specimen of fancy painting, pastille, Emily C. Dills, Fort Wayne, Indiana.”

   “Pastille, Crayon or Chalk on Photograph.”

   “Painting with water color, oil, or pastille, from still life.”

verb

1. (transitive)To make into a pastille.