Muggins /(?)/

Mug·gins

Muggins

n.
  1. A game of dominoes in which the object is to make the sum of the two ends of the line some multiple of five.
  2. A game at cards which depends upon building in suits or matching exposed cards, the object being to get rid of one's cards.

Muggins

v. t.
  1. In certain games, to score against, or take an advantage over (an opponent), as for an error, announcing the act by saying “muggins.”