pastille

An often round and somewhat flat flavoured candy or sweet.

Any small, usually round and somewhat flat, granular piece of material; a tablet.

(specifically, historical) A small pellet containing aromatic substances, burned to diffuse a fragrance or to disinfect or fumigate.

(historical) A medicinal pill, originally made of compressed herbs.

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.