sumo -
a Japanese form of wrestling; you lose if you are forced out of a small ring or if any part of your body (other than your feet) touches the ground
rassling,
grappling,
wrestling the sport of hand-to-hand struggle between unarmed contestants who try to throw each other down
sport the occupation of athletes who compete for pay
each year: three at The Sumo Hall in Ryōgoku, Tokyo (January, May, and September), and one each in Osaka (March), Nagoya (July) and Fukuoka (November). Each tournament begins on a Sunday and runs for 15 days, ending also on a Sunday. Each wrestler in the top two divisions has one match per day, while the lower ranked rikishi compete in seven bouts, approximately one every two days.
OmegaWiki Dictionary
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sumo A stylised Japanese form of wrestling in which a wrestler loses if he is forced from the ring, or if any part of his body except the soles of his feet touch the ground.