noun
New Year's Grand Sumo Tournament; January sumo tournament
Refers specifically to the first of the six annual professional sumo tournaments, held in Tokyo in January.
初場所は毎年1月に両国国技館で行われます。
The New Year's Tournament is held every January at the Ryogoku Kokugikan.
Compound of 初 (hatsu, 'first') and 場所 (basho, 'place' or 'tournament'), referring to the first sumo tournament of the year.