The crossword solution for the term 'Allowance Weight' is TRET, which stands for 'Tare Re-Weight'. Tare Re-Weight is a process used in the shipping industry to ensure that the weight of a shipment is within the allowable limits. This process involves weighing the shipment before and after it is loaded onto the truck or other vehicle, and then subtracting the tare weight of the vehicle from the total weight. This allows for an accurate calculation of the actual weight of the shipment.