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.
So according to this site the origin of the 'Wombo Combo' term comes from Super Smash Bros Melee (amazing game too) to define an crazy combo. For LoL does it means instakill everyone? What are the famous 'Wombo Combo' of LoL?