give back (Verb) To return, restore (a thing to its original owner or location etc.). give back (Verb) To contribute money, goods or, especially, services for charitable purposes, as if in return for one's own success. Freebase (0.00 / 0 votes) Rate this definition:
The New Hacker's Dictionary(0.00 / 0 votes)Rate this definition: womble. [Unisys UK: from British puppet-show characters] A user who has great difficulty in communicating their requirements and/or in using the resulting software. Extreme case of luser.
The origin of the Wombo Combo comes from Super Smash Bros Melee, as you stated in the question, and it is defined as two players in the game chain together certain moves to highly damage and/or kill the enemy. The moves compliment each other and thus create a combo.