infundibulate
boat-shaped
boatlike
bowl-shaped
bowllike
cavelike
cavernous
choanal
concave
concaved
cone-shaped
coned
conelike
conic
craterlike
cup-shaped
cupped
cymbiform
dish-shaped
dished
dishing
dishlike
funnel-breasted
funnel-chested
funnel-shaped
funnelform
funnelled
funnellike
hollow
hollowed
incurved
incurving
incurvous
infundibuliform
navicular
naviform
retiring
retreating
saucer-shaped
scaphoid
scyphate
spheroconic
spoonlike
sunk
sunken