fragment - a piece broken off or cut off of something else; "a fragment of rock"

matchwood - fragments of wood; "it was smashed into matchwood"

exfoliation, scurf, scale - a thin flake of dead epidermis shed from the surface of the skin

scurf - (botany) a covering that resembles scales or bran that covers some plant parts

sliver, splinter, flinders - a small thin sharp bit or wood or glass or metal; "he got a splinter in his finger"; "it flew into flinders"

marking - a pattern of marks

speck, pinpoint - a very small spot; "the plane was just a speck in the sky"

nebula - (pathology) a faint cloudy spot on the cornea

worn spot, fret - a spot that has been worn away by abrasion or erosion

plaque - (pathology) a small abnormal patch on or inside the body

macule, macula - a patch of skin that is discolored but not usually elevated; caused by various diseases

stain - produce or leave stains; "Red wine stains the table cloth"

change surface - undergo or cause to undergo a change in the surface

splotch - blotch or spot

maculate, tarnish, defile, sully, stain - make dirty or spotty, as by exposure to air; also used metaphorically; "The silver was tarnished by the long exposure to the air"; "Her reputation was sullied after the affair with a married man"

bespeckle, speckle - mark with small spots; "speckle the wall with tiny yellow spots"

bespatter, spatter - spot, splash, or soil; "The baby spattered the bib with food"