thundercloud

n.

1. A large dark cloud charged with electricity and producing thunder and lightning; a cumulonimbus cloud.
2. Something menacing or dreadful: thunderclouds of impending war.

noun

An indication of impending danger or harm: foreboding, forewarning, threat. Idioms: gathering clouds, storm clouds. See foresight.

Note: click on a word meaning below to see its connections and related words.

The noun has one meaning:

Meaning #1: a dark cloud of great vertical extent charged with electricity; associated with thunderstorms
  Synonyms: cumulonimbus, cumulonimbus cloud

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Dansk (Danish)
n. - tordensky

Nederlands (Dutch)
onweerswolk

Français (French)
n. - nuage orageux

Deutsch (German)
n. - Gewitterwolke

Ελληνική (Greek)
n. - (μετεωρ.) σωρειτομελανίας, σύννεφο καταιγίδας, (μτφ.) προάγγελος καταιγίδας

Italiano (Italian)
nuvolone

Português (Portuguese)
n. - nuvem tempestuosa (f), nuvem negra de tempestade (f)

Русский (Russian)
грозовая туча

Español (Spanish)
n. - nubarrón, nube de tormenta

Svenska (Swedish)
n. - åskmoln

中文（简体）(Chinese (Simplified))
雷雨云

中文（繁體）(Chinese (Traditional))
n. - 雷雨雲

한국어 (Korean)
n. - 뇌운, 암운, 위협을 느끼게 하는 것

日本語 (Japanese)
n. - 雷雲

العربيه (Arabic)
‏(الاسم) ألسحابه ألرعادة‏

עברית (Hebrew)
n. - ‮ענן-רעם, ענן-ברק‬

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