plural of black-bellied sandgrouse

plural of black swallow-wort

(mathematics, physics) A mathematical formulation for a black hole which does not contain a singularity. The environment outside the event horizon is the same as other formulations for black holes.

Synonym of black bag operation

plural of black bag job

(informal) A covert or clandestine entry into a building etc. to obtain information for an intelligence operation.

plural of black bag operation

(computing, informal) The situation where a computer monitor displays a correct screen image when first switched on, but then quickly blanks out, typically associated with capacitor problems.

plural of Black Forest horse

A draft horse of a rare breed originating in southern Germany. It has a dark chestnut coat with a flaxen mane and tail.