1. The punch that ends a contest. 2. A fighter who is capable of, after having hurt an opponent, effectively continuing the attack to knock out the opponent.
Copier (or printer) output device, usually with an automatic-stapling device. For reasons having more to do with copier history than logic, the verb "to finish" is generally used only to describe the stapling process that occurs with output catch trays (OCT), not the stapling function carried out by stapler-sorters. The word "finisher" is often used to describe the entire OCT/stapling device. Multiple trays can be designated for copying, printing and faxing output if desired, to prevent mixing of jobs.
One who finishes, puts an end to, completes, or perfects; esp. used in the trades, as in hatting, weaving, etc., for the workman who gives a finishing touch to the work, or any part of it, and brings it to perfection.