[かどばん, kadoban] (n) (1) make-or-break game in a go or shogi tournament; (2) ozeki-ranked sumo wrestler being in danger of losing his rank if he fails to win 8 or more bouts in a 15-day tournament
[すべりどめ, suberidome] (n) (1) tyre chains; anti-skid device; (2) backup measure; taking entrance examination to a university in case one fails at other universities