Newfoundland English. "Any night during Christmas season on which jannies go around visiting at people's houses: 'On janny-night they used to get dressed up and go from house to house. Would dance and get something to eat. Usually had a harmonica or a jews harp... Would go out most nights from Christmas Eve to New Year." --Dictionary of Newfoundland English, 2nd ed. See also janny and janny-talk.