Camber

From end to end, just behind the houses, ran the broad gravel walk, with its emphatic camber and its metal-edged gutters where a child's ball would come to rest and the first few plane leaves, dusty but still green, were already falling, since the summer had been so hot and rainless all through.

Source: wiktionary

The track was stony with a grassy camber up the middle.

Source: wiktionary

Again we were stricken of our palsy, slowed down, re-accelerated, and there, at last, were the few huts of a hamlet, with the lorry, lying at an angle in the road's camber, outside a tea-shop.

Source: wiktionary

Even a small camber one way caused the whole outfit to list alarmingly.

Source: wiktionary