Nōnes, n. pl.

n. pl. [Fr. nones, Lat. nonæ, from nonus, the ninth, for novenus, from novem, nine, so called because it was the ninth day before the ides.]

1. (Rom. Calendar.) 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 from the ides, reckoning inclusively, according to the Roman method.
2. [Fr. none, It. & Sp. nona.] A season of prayer formerly observed at noon in the Roman Catholic church. Todd.