Brood | Webster's Dictionary (1865)

Brōōd, v. i.

verbintransitive

[imp. & p. p. BROODED; p. pr. & vb. n. BROODING.] [A-S. brōd, D. brood, O. H. Ger. bruot, pruot, Ger. brut, brood, the young of all kinds of animals, covey, hatching. See BREED.] 1. To sit on and cover eggs, as a fowl, for the purpose of warming them and hatching the young; or to sit over and cover young, as a hen her chickens, to warm and protect them; hence, to sit quietly. While birds of calm sit brooding on the charmed wave. Milton. 2. To have the mind uninterruptedly dwell a long time on a subject; to remain a long time in anxiety or solicitous thought;—followed by over or on; as, to brood over misfortunes. “Brooding on unprofitable gold.” Dryden.

Brōōd, v. t.

verbtransitive

To sit over, cover, and cherish; as, a hen broods her chickens.
To cherish with care. [Rare.]

You'll brood your sorrows on a throne. Dryden. He nor heaps his brooded stores, Nor all profusely pours. Gray.

Brōōd, n.

noun

n. [See supra.] 1. Offspring; progeny. The lion roars and gluts his tawny brood. Wordsworth. *Or any other of that heavenly brood Set down in cloudy throne to do the world some good. Milton.* 2. That which is bred or produced; species generated; product. Libya’s broods of poison. Addison.

A hatch; the young birds hatched at once; as, a brood of chickens.
The act of covering the eggs, or of brooding. [Rare.]

*There’s something in his soul O’er which his melancholy sits on brood. Shak.* 5. (Mining.) Any heterogeneous mixture among tin or copper ore, as mundic, blackjack, &c.