The crossword solution for the term CURVED AND HOLLOW is CONCAVE, which is a 7-letter word. CONCAVE is an adjective that describes something that is curved inward or hollowed out. It is often used to describe the shape of a surface or object, such as a bowl or a cave. In geometry, CONCAVE shapes are those that have an interior angle greater than 180 degrees. CONCAVE is the opposite of convex, which describes something that is curved outward.