(1):

(n. pl.) The fifth day of the months January, February, April, June, August, September, November, and December, and the seventh day of March, May, July, and October. The nones were nine days before the ides, reckoning inclusively, according to the Roman method.

(2):

(n. pl.) The canonical office, being a part of the Breviary, recited at noon (formerly at the ninth hour, 3 P. M.) in the Roman Catholic Church.

(3):

(n. pl.) The hour of dinner; the noonday meal.