The Collaborative International Dictionary
Sextaries
Sextary \Sex"ta*ry\, n.; pl. Sextaries. [L. sextarius the sixth part of a measure, weight, etc., fr. sextus sixth, sex six.] (Rom. Antiq.) An ancient Roman liquid and dry measure, about equal to an English pint.
Wiktionary
sextaries
n. (plural of sextary English)