HOL'YDAY, noun A day set apart for commemorating some important event in history; a festival intended to celebrate some event deemed auspicious to the welfare of a nation; particularly an anniversary festival, devoted to religious solemnities; as christmas holydays.

1. A day of joy and gayety.

2. A day of exemption from labor; a day of amusement.

HOL'YDAY, adjective Pertaining to a festival; as a holyday suit of clothes.