(n.) A small nodule or cystic tumor, common on the nose, etc., which on pressure allows the escape of a yellow wormlike mass of retained oily secretion, with a black head (dirt).

blackhead blaze bleb blemish blister blotch brand bulla caste mark character check checkmark cicatrix comedo crack crater craze cut dapple defacement defect deformation deformity discoloration disfiguration disfigurement distortion dot earmark engraving fault feature flaw fleck flick freckle gash graving hack hemangioma hickey jot keloid kink lentigo macula mark marking milium mole mottle needle scar nevus nick notch patch pimple pit pock pockmark point polka dot port-wine mark port-wine stain prick puncture pustule rift scab scar scarification score scotch scratch scratching sebaceous cyst speck speckle splash split splotch spot stain stigma strawberry mark sty tattoo tattoo mark tick tittle track trait travail twist verruca vesicle wale warp wart watermark weal welt wen whitehead