from The Century Dictionary and Cyclopedia
- n. In medieval music for more than four voice-parts, the second additional voice or part.
Sorry, no etymologies found.
Most months that exist now have meaning and carry names lyrical and numerical -- save for July and August, the former named for Julius Caesar, the month of his birth and 44 years later, his death, the latter for Augustus, a month originally called Sextilis (from sextus for six).
Exinde amissis succedentium nominibus, sextus decimus dicebatur vel dicitur Melec Mandibron: sub isto steti ego per aliquod tempus stipendiarius in guerris suis contra Bedones, qui ei tunc temporis rebellabant.
(Lyon, 1604); Jean Lemoine, Glossae to Extravagantes com - munes, at end of the Lyon (1559), ed. of the Liber sextus;
 "Vitæ ... viginti trium abbatum Sancti Albani," in "Matthæi Paris monachi Albanensis [Opera]," London, 1639-40, 2 vols. fol., vol.ii. p. 56 "Gaufridus decimus sextus [abbas]."
Hence Benedict XIV could rightly say that the collection of his Bulls formed part of the corpus juris (Jam fere sextus, 1746).
Edwardus sextus Dei gratia Angliæ, Franciæ, et Hiberniæ rex, omnibus
The line _et qui sextus erat Romae regnare quadratae_, once attributed to Ennius (ed. Vablen, 1854,