Meanings of less boxy in English

The sturdy chassis has beveled edges that make the unit look less boxy.

The front end is slightly sportier, less boxy.

It's a touch taller than those cars, but its profile looks less boxy and lower to the ground.

The companion Lumia 710 smartphone differs aesthetically from the 800 in that it's less boxy, instead boasting rounded edges and a flat-looking face.