Main Entry: hollow

Part of Speech: adjective

Definition: empty, hollowed out

Synonyms: alveolate, arched, carved out, cavernous, cleft, concave, cup-shaped, cupped, curved, deep-set, depressed, dimpled, excavated, incurved, indented, infundibular, not solid, notched, pitted, striated, sunken, troughlike, unfilled, vacant, vaulted, void

Antonyms: convex, full, raised, solid.