crater (n.)
- abysm
- abyss
- alveolus
- antrum
- armpit
- basin
- birthmark
- blackhead
- bleb
- blemish
- blister
- bowl
- bulla
- cavity
- chasm
- check
- cicatrix
- comedo
- concavity
- crack
- craze
- crevasse
- crypt
- cup
- deep
- defacement
- defect
- deformation
- deformity
- depression
- depth
- dip
- disfiguration
- disfigurement
- distortion
- fault
- flaw
- fold
- follicle
- freckle
- gulf
- hemangioma
- hickey
- hole
- hollow
- keloid
- kink
- lacuna
- lentigo
- milium
- mole
- nevus
- pimple
- pit
- pock
- pockmark
- pustule
- rift
- scab
- scar
- scoop
- scratch
- shaft
- shell
- sink
- sinus
- socket
- split
- sty
- track
- trough
- twist
- verruca
- vesicle
- wale
- warp
- wart
- weal
- well
- welt
- wen
- whitehead
