overruffPronunciation: /əʊvəˈrʌf/Definition of overruff verb [no object] (in bridge, whist, and similar card games) play a trump that is higher than one already played in the same trick: there was a danger that West would be able to overruff noun Pronunciation: /ˈəʊvərʌf/ an act of overruffing: when you see the chance of an easy overruff, don’t be in too much of a hurry to take itoverruff in other Oxford dictionaries Definition of overruff in the US English dictionary