The Collaborative International Dictionary
Tretis
Tretis \Tre"tis\, Tretys \Tre"tys\, n. [See Treatise.]
A treatise; also, a treaty. [Obs.]
--Chaucer.
Tretis
Tretis \Tre*tis"\, Tretys \Tre*tys"\, a. [OF. traitis.]
Long and well-proportioned; nicely made; pretty. [Obs.] ``Her
nose tretys.''
--Chaucer.
Wiktionary
tretis
n. (obsolete form of treatise English)