kümülüs kalvüs

listen to the pronunciation of kümülüs kalvüs
Турецкий язык - Английский Язык
thunderhead
The top portion of a cumulonimbus cloud, which tend to be flattened or fibery in appearance, and which may be indicative of thunderstorm activity
{i} large cumulonimbus cloud that often precedes a thunderstorm
A rounded mass of cloud, with shining white edges; a cumulus, often appearing before a thunderstorm