-
gain
-
channel
-
pocket
-
bore
-
socket
-
fold
-
Noun cavity
-
recess
-
niche
-
delve
-
slap
-
pit
-
scoop
-
chasm
-
hole
-
chute
-
cave
-
tunnel
-
hollow
-
Noun indentation
-
groove
-
boss
-
sinus
-
rut
-
vein
-
pouch
-
crater
-
fossa
-
pitter
-
cavitation
-
gully
-
antrum
-
grot
-
flute
-
hollow place
-
rabbet
-
pigeon hole hollow
-
concave
-
basined
-
incavation
-
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