sickle

bow curve half-moon meniscus

concave figure convex figure cresentoid demilune horned moon hornlike lune new moon old moon

bayonet blade cutter dagger machete scalpel skewer sword

bolo cutlass edge lance lancet point ripper sabre scimitar scythe shank shiv steel stiletto switchblade tickler

cutting edge skiver

blade knife

bola bolo

carve divide rip slash slice

amputate behead bisect bite chine chip chisel cleave clip crop curtail dice dispatch dissect dissever facet fell flitch gash guillotine hack hash hew intersect lacerate level lop massacre mince mow nick notch part penetrate perforate pierce prune puncture quarter rabbet raze reap rend rive saber saw scarify scissor score scythe separate shave shear slaughter slay slit sliver snip

lay open mow down skive

combine unite

close connect join mend

shear trim

clip crop scythe