ELEVENTH
Source: 567
E‐lev″enth (?), a. [[Cf. AS. endlyfta. See Eleven.]] 1. 1. Next after the tenth; as, the eleventh chapter.
2. 2. Constituting one of eleven parts into which a thing is divided; as, the eleventh part of a thing.
3. 3. (Mus.) Of or pertaining to the interval of the octave and the fourth.