American Heritage® Dictionary of the English Language, Fourth Edition
- n. A large dark cloud charged with electricity and producing thunder and lightning; a cumulonimbus cloud.
- n. Something menacing or dreadful: thunderclouds of impending war.
Century Dictionary and Cyclopedia
- n. A cloud that produces lightning and thunder. Such clouds are of the cumulus or strato-cumulus type, generally appearing in dense, dark, towering masses, with a cirro-stratus overflow. In hilly regions thunder-clouds have been observed entirely within a limit of 1,500 feet above the earth, but in general the base of the cloud is from 3,000 to 4,000 feet high, and its vertical thickness from 2,000 to 12,000 feet.
- n. a large, dark cloud, usually a cumulonimbus, charged with electricity and producing thunder and lightning; a stormcloud
- n. by extension something menacing and brooding
GNU Webster's 1913
- n. A cloud charged with electricity, and producing lightning and thunder.
- n. a dark cloud of great vertical extent charged with electricity; associated with thunderstorms
“When the thundercloud is over the cork, click the cloud.”
“The sword/staff drawing a line along the curve of the thundercloud is a brilliant touch.”
“If I cared about numbers I would measure these shadows and thundercloud bruises and stagnant mosquito magnet hours.”
“The black man in Los Angeles sitting on the curb, a thundercloud of smoke rushing out his lips.”
“But I know you heard us, our locks, our curls weighed down with mist, salt wind, rainstorm, thundercloud, stilled by our audible voices.”
“He goes off to play a DVD game, looking like a thundercloud.”
“Johnson will also be taking this week off to enjoy a brief family break, though Mrs Johnson may struggle to relax with such a dark thundercloud hanging over the breakfast table.”
“Erratic trails of water that meet in a puddle in another untitled photograph look like lightning from an inverted thundercloud.”
“Terrible ideas -- such as "trickle down" tax cuts, deeming corporations "people," or deregulating everything -- drench us like a relentless thundercloud opening over our heads.”
“You've heard them, their locks, their curls weighed down with mist, salt wind, rainstorm, thundercloud, stilled by their audible voices drawing us in.”
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