Skin

• whitehead

  A small whitish lump in the skin due to a clogged sebaceous gland.

• blackhead

  A black-tipped plug clogging a pore of the skin.

Also contains

• wart

  (pathology) a firm abnormal elevated blemish on the skin; caused by a virus.

• blot

  A blemish made by dirt; "he had a smudge on his cheek".

• birthmark

  A blemish on the skin that is formed before birth.

• crack

  A blemish resulting from a break without complete separation of the parts; "there was a crack...

• nick

  An impression in a surface (as made by a blow).

• burn

  A place or area that has been burned (especially on a person's body).

• stigma

  A skin lesion that is a diagnostic sign of some disease.

• chatter mark

  A mark made by a chattering tool on the surface of a workpiece.

• check

  A mark left after a small piece has been chopped or broken off of something.

• mole

  A small congenital pigmented spot on the skin.

• mark

  An indication of damage.