What is "storm-cloud"

Usage examples of "storm-cloud".

It was, however, a large, flashing eye, as became beings who were personifications of the storm-cloud, with its flashes of destructive lightning and peals of thunder.

Space leaped into the screen, star-strewn except where the storm-cloud mass of the dark nebula reared ahead.

The water must be gushing out across the top of the plaster-work, percolating down between the laths, saturating the plaster, which was darkening in several large irregular patches—gathering storm-clouds besetting the French Navy and darkening the sea from robin’s-egg blue to a more realistic iron-gray.

Now the Trojans followed Hector son of Priam in close array like a storm-cloud or flame of fire, fighting with might and main and raising the cry battle.