(1):
(a.) Of or pertaining to the interval of the octave and the fourth.
(2):
(a.) Next after the tenth; as, the eleventh chapter.
(3):
(n.) The quotient of a unit divided by eleven; one of eleven equal parts.
(4):
(a.) Constituting one of eleven parts into which a thing is divided; as, the eleventh part of a thing.
(5):
(n.) The interval consisting of ten conjunct degrees; the interval made up of an octave and a fourth.