The phrase "slab style" refers to a design or architectural style that features flat, solid surfaces without much ornamental detail. It's characterized by its simplicity, clean lines, and minimalistic appearance. Full definition
The new Pixel looks a lot like the old, maintaining the same slab styling as its predecessor. (androidcentral.com)
We will also be going with a clean modern slab style cabinet front with floating shelves flanking a range hood. (sarahshermansamuel.com)
It's still typical Sony affair, using their minimalist slab style that's been a feature of nearly every smartphone out of the company in the past couple of years. (techspot.com)