'Muggins' definitions:

Definition of 'muggins'

From: WordNet
noun
A person who lacks good judgment [syn: fool, sap, saphead, muggins, tomfool]

Definition of 'Muggins'

From: GCIDE
  • Muggins \Mug"gins\, n. [Etym. unknown.]
  • 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. [Webster 1913 Suppl.]
  • 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. [Webster 1913 Suppl.]

Definition of 'Muggins'

From: GCIDE
  • Muggins \Mug"gins\, v. t. In certain games, to score against, or take an advantage over (an opponent), as for an error, announcing the act by saying "muggins." [Webster 1913 Suppl.]