n. The condition or quality of being muggy. [ 1913 Webster ]
n. [ p. pr. & vb. n. from mug, v. ] A robbery; a taking of property by threatening (or performing) violence on the person who is robbed. See mug, v.
n. [ Etym. unknown. ]
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. ]