A ritual, allegedly celebrated by witches, characterized by the inversion of the Traditional Latin Mass celebrated by the Roman Catholic Church.

(Philippines) A ghost of a lady in black mourning clothes. / (loosely, especially outside Philippines) Used other than figuratively or idiomatically: see black, lady.

(historical) Of a chimney sweep: to sleep unwashed, still in a sooty condition.

present participle of black box

A dirty look.

plural of black cow

(slang) A root beer float.

plural of cut to black

present participle of black hole

simple past tense and past participle of black hole