Set of three

Usage examples of trifecta.

No fresh tourist corpses had popped up and even the Trifecta Massacre had turned into a dead end, the bomber having made a clean getaway.

For the trifecta, you choose the three dogs that finish first, but it's really hard to get those.

There were center-hall colonials and Victorians and an occasional New England saltbox, but most frequent were the Tudors, and I found myself daydreaming about someday hitting a Trifecta or marrying a rich widow and moving into one of them.