front part of a sumo wrestler's mawashi
Refers specifically to the front section of the thick belt (mawashi) worn by sumo wrestlers, covering the groin area. A specialized sumo term.
The wrestler tightened the front of his mawashi and stepped onto the ring.
Compound of 前 (mae, 'front') and 褌 (mitsu, 'loincloth'). The reading みつ for 褌 is a specialized sumo term.