Source : Webster's Revised Unabridged Dictionary (1913)

Tretis \Tre"tis\, Tretys \Tre"tys\, n. [See {Treatise}.]
   A treatise; also, a treaty. [Obs.] --Chaucer.

Tretis \Tre*tis"\, Tretys \Tre*tys"\, a. [OF. traitis.]
   Long and well-proportioned; nicely made; pretty. [Obs.] ``Her
   nose tretys.'' --Chaucer.