cachou

plural cachous

1. A sweet eaten to sweeten the breath.

   Dante gave him a cachou every time he brought her a piece of tissue paper.

   1916, James Joyce, Portrait of the Artist as a Young Man, Macmillan Press Ltd, paperback, page 20

   1 more example

   But her husband, frowning, remembered those little sweets, or cachous, scented with something like violet, a synthetic smell, that had drifted on the more irritating afternoons above the smells of the sealing wax and ink.

   1955, Patrick White, chapter 19, in The Tree of Man, New York: Viking, page 347

2. A small metallic ball used as edible decoration on cakes, etc.