[app. ad. Ger. brüll roar, roaring, f. brüllen, Du. brullen to roar (as a lion, etc.). (Cf. BRILL v. 2.)] A low deep humming sound; a murmur. Also fig. So Brooling vbl. sb.
1837. Carlyle, Fr. Rev. (1871), I. 144. List to the brool of that royal forest-voice.
1879. Spectator, 29 Nov., 1502/1. Men who never have the smallest idea of what the meaning of that multitudinous brool will be. Ibid. (1884), 16 Feb., 213/1. A man who could represent the ruling opinion of the hour with a brool as loud as its own.
1837. Carlyle, Fr. Rev. (1857), II. II. IV. iv. 14. The People also is calm With but a few broolings.