(A). A school-feast, so called from being held on St. Gregory's Day (March 12th). On this day the pupils at one time brought the master all sorts of eatables, and of course it was a dies non, and the master shut his eyes to all sorts of licences. Gregories were not limited to any one country, but were common to all Europe.
(St.). The last Pope who has been canonised. Usually represented with the tiara, pastoral staff, his book of homilies, and a dove. The last is his peculiar attribute.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894