Convex Curve in the Structure of a Road
Puzzle 5 of Animals with Weird Names Hard Pack
Question is: Convex Curve in the Structure of a Road
and the answer is: CAMBER
Word Meaning:
CAMBER — A slight convexity, arching or curvature of a surface of a road, beam, roof, ship's deck etc., so that liquids will flow off the sides.
Definitions from Wiktionary.