feast of sacrifice(n = noun.time) id al-adha - the 10th day of Dhu'l-Hijja; all Muslims attend a service in the mosques and those who are not pilgrims perform a ritual slaughter of a sheep (commemorating God's ransom of Abraham's son from sacrifice) and give at least a third of the meat to charity;
is a kind of feast day, fete day

feast, feast day, feast of booths, feast of dedication, feast of dormition, feast of lights, feast of tabernacles, feast of the circumcision, feast of the dedication, feast of the unleavened bread, feast of weeks, feast one's eyes, love feast, movable feast, moveable feast, sacrifice, sacrifice fly, sacrifice operation