camber

nouns

a slight convexity (as of the surface of a road)
is a type of (narrower)
a shape that curves or bulges outward
a slope in the turn of a road or track; the outside is higher than the inside in order to reduce the effects of centrifugal force
the alignment of the wheels of a motor vehicle closer together at the bottom than at the top
is a type of (narrower)
the act of adjusting or aligning the parts of a device in relation to each other

verbs

curve upward in the middle
is a type of (narrower)
form an arch or curve
"her back arches"; "her hips curve nicely"