scallop

incision indentation

cavity crater crenel cut dimple dint dip embrasure furrow hollow impression nick notch pit score scratch sink trough

con-cavity

increase

bulge

trench

canal corrugation crease crimp cut cutting depression ditch flute fluting furrow gouge gutter hollow incision notch pucker rabbet rut score scratch slit valley

clam conch crawfish crustacean lobster mollusk mussel oyster prawn shrimp snail

barnacle crayfish piddock whelk

pucker scrunch

cockle coil crackle crease crimp curl fold hiss ruck rumple rustle screw seam swish twist whisper wind wreathe wrinkle

crimple

flatten smooth straighten untwist

buckle coil contort curve fold twirl twist writhe

convolute corkscrew crimp crinkle crisp crook entwine frizz indent kink lap meander ringlet ripple roll snake spiral swirl turn twine undulate wave wind wreathe zigzag

form into ringlets

flatten smooth straighten untwist

bash cut dent depress dint hollow jag mark nick notch pink pit rabbet rut score serrate

cave in

raise

flush

chisel cleave crenelate crimp cut dent gash incise jag mark mill nick score scratch

mend smooth

flush

incise notch perforate prick punch score