► 名詞土俵際  [どひょうぎわ]    
meaning:  edge  rank: 4☆ 
彼は
人生の土俵際にいる ⇨ He is at the sumo-ring edge of life  
(☛ The edge of a Sumo ring which you lose a match when you go over. Often used figuratively)More examples:- 彼は相手を土俵際でうっちゃった ⇨ He threw the opponent out at the edge of the sumo ring
 - 彼は相手を土俵際にがぶり寄った ⇨ He pushed the opponent little by little to the edge of the ring