1. a small dark plug of oil and dead skin cells blocking a pore in the skin
Usage: dermatology
2. a type of duck with a black head, especially the ring-necked duck
Usage: ornithology

Examples

• She used a special cleanser to remove blackheads from her nose.
• The dermatologist explained that blackheads form when pores become clogged.
• Squeezing blackheads can lead to scarring and infection.
• Regular exfoliation can help prevent blackheads from forming.
• The hunters spotted a flock of blackheads on the lake.
• Blackheads are common waterfowl in North American wetlands.