overruff

From over- +‎ ruff.

overruff (third-person singular simple present overruffs, present participle overruffing, simple past and past participle overruffed)

1. (bridge) To ruff with a higher trump following a prior ruff on the same trick.

• overtrump

• underruff

overruff (plural overruffs)

1. (bridge) An act of overruffing.
   • 2009 January 3, Phillip Alder, “What to Bid Next? That Depends on the Game You’re Playing”, Bridge, in New York Times‎^[1]:

     Declarer eventually lost one heart, two diamonds and the club overruff for plus 110 to win the board and leapfrog his team from third to second.

• Contract bridge glossary on Wikipedia.Wikipedia