Brood n.
 1. The young birds hatched at one time; a hatch; as, a brood of chickens.
    As a hen doth gather her brood under her wings.   --Luke xiii. 34.
    A hen followed by a brood of ducks.   --Spectator.
 2. The young from the same dam, whether produced at the same time or not; young children of the same mother, especially if nearly of the same age; offspring; progeny; as, a woman with a brood of children.
    The lion roars and gluts his tawny brood.   --Wordsworth.
 3. That which is bred or produced; breed; species.
 Flocks of the airy brood,
 (Cranes, geese or long-necked swans).   --Chapman.
 4. Mining Heavy waste in tin and copper ores.
 To sit on brood, to ponder. [Poetic]