Mylopharyngodon piceus, a cyprinid fish native to East Asia, cultivated for food and traditional Chinese medicine.

(slang, games) The trick-taking card game hearts.

A prank fax transmission whose pages are entirely filled with a uniform black tone, so as to waste the ink of the recipient.

plural of black fax

(Canada, US, medicine) the condition on the occurrence of a patient death / (Canada, US, medicine) the condition on the occurrence of a security threat to medical facility infrastructure

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.