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]