noun.
In the Roman Catholic and Greek churches, in religious houses, and as a devotional office in the Anglican Church, the office of the sixth hour, originally and properly said at midday. See canonical hours, under canonical.
noun.
In music:
noun.
The interval of a sixth.
noun.
In organ-building, a mixture-stop of two ranks separated by a sixth—that is, consisting of a twelfth and a seventeenth.