► 名詞横綱  [よこづな]    
meaning:  champion  rank: 2☆ 
コシヒカリは
米の横綱と
言われる ⇨ Koshihikari rice is called the champion of rice  
(☛ A sumo champion)More examples:- 横綱が相手を豪快に投げ飛ばした ⇨ The Yokozuna powerfully threw away the opponent
 - 横綱が引退して断髪した ⇨ A sumo champion retired and cut his hair
 - 新横綱の御披露目の場所 ⇨ The debut tournament for the newly promoted Yokozuna