meuse I. \ˈmyüs, -üz\noun (-s) Etymology: Middle French muce, musse, from mucer, musser to hide, conceal 1.: a gap or hole (as in a hedge or wall) through which a wild animal is accustomed to pass 2.: something resembling a meuse in affording a means of escape : loophole II. intransitive verb (-ed/-ing/-s) : to go through a meuse