Nerf (trademarked in capitals as NERF) is a type of toy, created for safe indoor play, that either shoots or is made of foam-like material. ...
en.wikipedia.org/wiki/Nerf
In computer gaming, a nerf is a change to a game that reduces the desirability or effectiveness of a particular game element. ...
en.wikipedia.org/wiki/Nerf_(computer_gaming)
To bump lightly, whether accidentally or purposefully; to weaken, water down, or dumb down
en.wiktionary.org/wiki/nerf
Any update that lowers the effectiveness of an aspect of a game. An example of nerfing would be lowering the damage absorption of Armors.
deadfrontier.wikia.com/wiki/Glossary_&_Abbreviations
nerfing - When game designers reduce the effectiveness of an item or character class to improve game balance.
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