A member of the RIC British irregular army group, operating against Irish republicans in the War of Independence 1920/21.

(informal, aviation) A flight recorder; the brightly colored cockpit voice recorders and flight data recorders in an aircraft designed to aid in determining the cause of an accident.

(web development) To focus on the inputs and outputs without worrying about the internal complexity.

Alternative spelling of blackjack / Caranx lugubris, a gamefish / Bidens spp., from the family of Asteraceae / (obsolete) The larva of a turnip sawfly (Athalia rosae) / (mining, mineralogy) Sphalerite.

(countable) A light bulb that emits ultraviolet light, usually used to create the illusion that anything white is glowing. / (uncountable, slang) ultraviolet radiation/light

Pertaining to Black Russia. / Used other than figuratively or idiomatically: see Black, Russian.

A cocktail containing vodka and a coffee-flavoured liqueur such as Kahlúa. / Used other than figuratively or idiomatically: see Black, Russian.

Of art, a photograph or photography, using shades of grey/gray rather than colour/color. / Of a television or monitor, displaying images in shades of grey/gray rather than colour/color.

A very dark blue. / Black with bluish highlights.

Of a very dark blue. / Black with bluish highlights.