fingermark

From finger +‎ mark.

fingermark (plural fingermarks)

1. A blemish made by a dirty finger.

   He left his fingermark on the recently cleaned cloth.

   • 1992 October 20, Marlise Simons, “Stone Age Art Shows Penguins at Mediterranean”, in New York Times:

     [The cave] Paintings are almost all black, done in charcoal and oxide of manganese. The naturalistic scenes are crisscrossed with fingermarks and an array of signs and geometric designs, zigzagged, straight and curved.