Crossruff

cross;ruff pronunciation: function: noun date: 1862 : a series of plays in a card game (as bridge) in which partners alternately trump different suits and lead to each other for that purpose— crossruff verb

しょう 証の意味

((as)) evidence; ((in)) proof ((of)). ?証明. ?会唗?　a membership card. ?学生?　a student identification card.