a type of currawong from Tasmania

Income that is not reported to a government in order to evade taxes. / (India) Money that is obtained illegally, especially that which circulates in the underworld.

Any of certain Mondays when undesirable or turbulent events have occurred.

plural of Black Cat

A waste product produced during digesting pulpwood into paper pulp.

Supporting or favoring black people.

Sambucus nigra

plural of black skimmer

A bird (Rynchops niger) native to the Americas.

Used other than figuratively or idiomatically: see black, mud.