From Longman Dictionary of Contemporary Englishsumosu‧mo /ˈsuːməʊ $ -moʊ/ (also sumo wrestling) noun [uncountable] DSOa Japanese form of wrestling, done by men who are very large —sumo wrestler noun [countable]
Examples from the Corpus
sumo• Already sumo experts are calling the equally athletic and handsome Takahanada a worthy replacement.• The fun includes wine tasting, vintage car display, bouncy castles, pony rides, music and sumo wrestling.• A gracious Chiyonofuji noted that Takahanada, in his deep attachment to each bout, was totally different from other sumo wrestlers.• Chiyonofuji was the Muhammed Ali of the sumo ring.Origin sumo (1800-1900) Japanese 