brown belt
noun
1- a belt of a brown colour marking a high level of proficiency in judo, karate, or other martial arts, below that of a black belt褐腰带（柔道、空手道或其他武术中用来表示选手的级别, 比黑腰带低一级）。
1.1
- a person qualified to wear such a belt褐腰带级运动员。