N. concavity, depression, dip, hollow, hollowness,
indentation,
intaglio, cavity,
dent,
dint,
dimple,
follicle, pit,
sinus,
alveolus,
lacuna,
excavation, strip mine,
trough,
honeycomb, cup, basin,
crater, punch bowl, cell,
socket, valley,
vale,
dale,
dell,
dingle,
combe, bottom,
slade,
strath,
glade,
grove,
glen, cave,
cavern,
cove,
grot,
grotto,
alcove,
cul-de-sac,
gully, arch, bay,
excavator,
sapper, miner, honeycomb (sponge) 252a
V. be concave, retire, cave in, render concave,
depress, hollow,
scoop, scoop out,
gouge, gouge out,
dig,
delve,
excavate,
dent,
dint, mine,
sap, undermine,
burrow,
tunnel, stave in
Adj. depressed, cellular,
alveolate,
spongy, calathiform,
spongious, cup-shaped,
honeycombed,
dishing,
alveolar,
favaginous, sintered,
faveolate, porous (opening) 260,
favose,
scyphiform, scyphose, concave, hollow, stove in, retiring, retreating,
cavernous,
porous, infundibul,
infundibular,
infundibuliform, funnel shaped, bell shaped,
campaniform,
capsular,
vaulted, arched, 252a spongeān,
sponge,
honeycomb, network,
frit,
filter,
sieve, net, screen (opening) 260