The Collaborative International Dictionary
Thick squall
Squall \Squall\ (skw[add]l), 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.
Usage examples of "thick squall".
It was a quarter of a mile away when a thick squall of rain veiled it from view.