Cold so intense as to freeze vegetation and turn it black, without the formation of hoarfrost.

(UK, dated) Any bovine cattle reared for its meat, as opposed to dairy cattle.

The black oxide of manganese, MnO₂.

(mining) Tin ore (cassiterite), when dressed, stamped and washed, ready for smelting. It is in the form of a black powder, like fine sand.

A cathartic medicine composed of senna and magnesia.

A coarse, sponge-like form of elemental palladium that offers a large surface area for hydrogen adsorption and can be used as a catalyst for hydrogenation reactions.

(simile) Very black (especially of a mood, a frown, etc.).

plural of black durgon

Melichthys niger, a triggerfish with bright white lines running along its dorsal and anal fins.

Any species of Pseudechis, a genus of Australian snakes. / Crotalus oreganus, a venomous North American pit viper species of snake.