单词 | blackhead |
释义 | Word Frequency blackhead(ˈblækˌhɛd) noun 1. a black-tipped plug of fatty matter clogging a pore of the skin, esp the duct of a sebaceous gland Technical name: comedo2. an infectious and often fatal disease of turkeys and some other fowl caused by the parasitic protozoa Histomonas meleagridis Technical name: infectious enterohepatitis3. any of various birds, esp gulls or ducks, with black plumage on the head |
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