Cheese

From Lexicanum

Cheese is a term used by many gamers to describe a particular 'overpowered' army list, usually one that stretches the (admittedly sketchy) rationale of the game.

These lists often include armies with three Eldar Wraithlords or three Necron Monoliths; or armies skimping on basic troops in order to maximise the points available to kit out characters or take more large tanks, etc.

Other similar terms are 'beardy' and 'power'.