pastille

small roll of dough containing fragrant ingredients baked in order to perfume the air; pastille, lozenge, drop (medicinal or candy); lozenge-shaped figure in a design; the conductive part of a printed circuit board that components are fixed to

“J'ai acheté des pastilles contre la toux.” — I bought some cough drops.

From Spanish pastilla (“small roll of fragrant dough”), from Latin pastellum (“dough, paste”), a diminutive form of pasta (“dough, paste”). Doublet of pastel.