cumulonimbus, cumulonimbus cloud, thundercloud
(noun) a dark cloud of great vertical extent charged with electricity; associated with thunderstorms
Source: WordNet® 3.1
cumulonimbus (plural cumulonimbuses or cumulonimbi)
A cloud, with a tall structure and a flat base, that is often associated with thunderstorms.
• nimbocumulus
Source: Wiktionary
2 April 2025
(adjective) secret or hidden; not openly practiced or engaged in or shown or avowed; “covert actions by the CIA”; “covert funding for the rebels”
The world’s most expensive coffee costs more than US$700 per kilogram. Asian palm civet – a cat-like creature in Indonesia, eats fruits, including select coffee cherries. It excretes partially digested seeds that produce a smooth, less acidic brew of coffee called kopi luwak.
