(countable, uncountable) A tree (Alnus glutinosa), of many practical uses, growing in moist conditions in Europe. / (uncountable) Wood or other product of the tree.

(historical) A former principality in Eastern Europe.

Magic derived from evil forces, as distinct from good or benign forces; or magic performed with the intention of doing harm.

(rare) Of or pertaining to employment in the black market; that is, to engagement in illicit trade or distribution of untaxed goods and services.

(colloquial, of a person) Having obvious bruises of the skin, typically from falling or being hit or punched.

Alternative spelling of blackcurrant

(geography) An inland sea bound by Southeastern Europe in the west, Eastern Europe in the north and northeast, and Turkey in the south.

Moderately formal; usually requiring a dinner jacket (tuxedo) for men.

A tree native to eastern North America, Nyssa sylvatica. / Eucalyptus aggregata, of south eastern Australia / Eucalyptus ovata, of south eastern Australia

plural of black hole