plural of Kerr black hole

An address book, especially one in which the details of one's lovers are recorded

plural of black-crested antshrike

plural of black-hooded antshrike

plural of black-throated antshrike

plural of black-necked screamer

plural of black-backed jackal

Canis mesomelas, a species of jackal which inhabits the southernmost and central-eastern regions of the African continent.

(computing) A type of self-balancing binary search tree, typically used to implement associative arrays.

A small (3 mm to 5 mm) species of ant common in Europe, Lasius niger.