| cumulonimbus | (n) a dark cloud of great vertical extent charged with electricity; associated with thunderstorms, Syn. thundercloud, cumulonimbus cloud |
| nimbus | (n) a dark grey cloud bearing rain, Syn. rain cloud, nimbus cloud |
| 積乱雲 | [せきらんうん, sekiran'un] (n) cumulonimbus cloud [Add to Longdo] |