Rook"er*y (?), n.; pl. Rookeries ().
The breeding place of a colony of rooks; also, the birds themselves.
A breeding place of other gregarious birds, as of herons, penguins, etc.
The breeding ground of seals, esp. of the fur seals.
A dilapidated building with many rooms and occupants; a cluster of dilapidated or mean buildings.
© Webster 1913.