Bruff

One of the men thinks we are going to have a storm, and points to the "bruff" round the sun. Sure enough , there is a broken ring of angry ominous-looking clouds encircling the sun; his face appears dimmed, and a sultriness prevails.

[…] the moon, as the orb shines through the haze, 'A far off bruff Is a storm near enough'[,] that is, when the halo appears in advance of the moon, like a fore-frame. The larger the bruff, the nearer the storm; or, […]