A type of bird, also called a coot, with a black face and head; or a person with a dark-colored nose.
From black (color) + neb (Scottish and Northern English dialect for nose or beak). This is a regional bird name from British folk nomenclature.
Folk names for birds like 'blackneb' vary wildly by region — the same bird might have a dozen names, showing how language evolves differently when communities name animals themselves rather than following scientific taxonomy.
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