Source : Webster's Revised Unabridged Dictionary (1913)

Tret \Tret\, obs.
   3d pers. sing. pres. of {Tread}, for treadeth. --Chaucer.

Tret \Tret\, n. [F. traite a drawing, trading, journey, tax on
   wares in transit, anything diminishing the value of coins,
   fr. OF. traire to draw, L. trahere. See {Trait}.] (Com.)
   An allowance to purchasers, for waste or refuse matter, of
   four pounds on every 104 pounds of suttle weight, or weight
   after the tare deducted. --M'Culloch.