Meanings of wider body in English

Instead of going down toward the wider body, he turned toward a narrow channel that angled into the land itself.

The bongo truck, similar to a pickup truck but with a wider body, was heading southeast now from the Syrian border-fast

Still that team of 11 makes for only a very small cross-section of what should be a wider body of Irish athletics.

Is there a conflict between these studies and the wider body of research indicating that, worldwide, glaciers have been receding for several decades?

As the downturn in demand forced the world's airlines to ground entire fleets of planes, many also put their wider body planes into early retirement.