TARE AND TRET  , in

commerce, allowances or deductions . Tare is an allowance made from the gross weight of goods for the box, bag or other wrapping in which the goods are packed . It may be real, i.e. representing the actual weight of the wrap-ping; customary, when a uniform or established rate is allowed; average, when one or two packages among several are weighed, and the mean or average of the whole taken; or super-tare, an additional allowance when the package exceeds a certain weight . Tret is an allowance of 4 lb. in every 104 lb. of weight, made as compensation for loss by waste . " Tare " comes through the Fr. tare, cf . Sp. tars, from Arab. tarha, tarh, throwing, casting—the word meant originally loss, that which is thrown away; " tret " is an adaptation of Fr. traite, Lat. trahere, to draw, and meant a draught, transportation, also a payment on ex-ports, an allowance on exportation .