noun
sumo wrestler's belt; mawashi
Specifically the thick belt worn by sumo wrestlers during matches. Also called まわし.
力士は締め込みをしっかりと締めて土俵に上がった。
The wrestler tightened his belt firmly and stepped onto the ring.
More common term for the sumo belt; 締め込み is a less frequent synonym.
Compound of 締め (shime, 'tightening') + 込み (komi, 'putting in'), referring to the tightly wrapped belt.