Synonyms and related words :
boat-shaped, boatlike, bowl-shaped, bowllike, cavelike, cavernous, concave, concaved, craterlike, cup-shaped, cupped, cymbiform, dish-shaped, dished, dishing, dishlike, funnel-breasted, funnel-chested, funnel-shaped, hollow, hollowed, incurved, incurving, incurvous, infundibular, infundibuliform, navicular, naviform, retiring, retreating, saucer-shaped, scaphoid, scyphate, sunk, sunken