noun
former grand champion's 60th birthday ring-entering ceremony
A special sumo ceremony where a former yokozuna, upon turning 60, performs a dohyo-iri (ring-entering ritual) wearing a red belt. Also known as 還暦横綱手数入り.
See also: 還暦横綱手数入り (かんれきよこづなでずいり)
先月、元横綱の還暦土俵入りが国技館で行われた。
Last month, the former grand champion's 60th birthday ring-entering ceremony was held at the Kokugikan.
Compound of 還暦 (kanreki, '60th birthday') + 土俵入り (dohyō-iri, 'ring-entering ceremony').