Definify.com
Webster 1913 Edition
Cachou
Caˊchou′
,Noun.
 [F. See 
Cashoo
.] A silvered aromatic pill, used to correct the odor of the breath. 
Definition 2025
cachou
cachou
English
Noun
cachou (plural cachous)
-  A sweet eaten to sweeten the breath.
-  1916, James Joyce, Portrait of the Artist as a Young Man (Macmillan Press Ltd, paperback), page 20:
- 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: