Squall (skwa̤l), n. [Cf. Sw. sqval an impetuous running of water, sqvalregn a violent shower of rain, sqvala to stream, to gush.] A sudden and violent gust of wind, often attended with rain or snow.
The gray skirts of a lifting squall. Tennyson.
Black squall, a squall attended with dark, heavy clouds. — Thick squall, a black squall accompanied by rain, hail, sleet, or snow. Totten. — White squall, a squall which comes unexpectedly, without being marked in its approach by the clouds. Totten.