A loss (or losses) from previous years carried forward in order to offset future earnings. This reduces the tax burden for the years with profit as the accumulated losses are deducted from the taxable profit.
There is no specific abbreviation for the term WIRE because when the payment is being made using this option, you will not see the physical movement of funds. It is all electronic. It is just like a current passes through Wire.
Therefore Electronic movement of funds is campared with WIRE.