Answer: cachous

AnswerCrossword Clue
cachousany of several astringent substances obtained from various tropical plants, esp. from the wood of two East Indian acacias, Acacia catechu and A. suma: used in medicine, dyeing, tanning, etc.
cachousCACHOU, a resin used in tanning, also CATECHU, CASHOO, CUTCH, KUTCH
cachouspill or lozenge for sweetening the breath