a fact, a remark or an event that settles an argument, a decision or a competition 起決定性作用的事實(或話語、事情) There was a lot of circumstantial evidence but they still needed a clincher, something cast iron that would carry a conviction. 有很多間接證據,但他們仍然需要一個決定性的東西,一個可以定罪的鑄鐵東西。 Sixsmith scored the clincher (= the winning goal) after 81 minutes. 81 分鐘後,西克史密斯得了決定勝負的一分。