Definify.com
Webster 1913 Edition
Thunderhead
Thun′der-headˊ
,Noun.
A rounded mass of cloud, with shining white edges; a cumulus, – often appearing before a thunderstorm.
Definition 2024
thunderhead
thunderhead
English
Thunderheads near Borneo
Noun
thunderhead (plural thunderheads)
- The top portion of a cumulonimbus cloud, which tends to be flattened or fibery in appearance, and may be indicative of thunderstorm activity.