thunderhead

• The bank of cloud became a towering thunderhead, grim and black against the darkening sky. —  ChallengingDestiny#24:August2007
• I was leaving when the cat rose like a thunderhead and stretched with a head-splitting pink yawn. —  Kat Richardson - Greywalker 1 - Greywalker (v2.0)
• Instrumented aircraft that fly through thunderstorms, sniffing out plus and minus regions, have verified C. T. R. Wilson's suggestion of 80 years ago: A thunderhead is positive in its upper regions, negative lower down. —  Omni: March 1994
• No, on second thought, looking more like a thunderhead It seemed that Angela had been told by the countess of a maiden who had once thrown herself to a watery death in the moat when she received word that her lover had been killed in battle. —  Mary Balogh - The Incurable Matchmaker
• He nodded, a single, straight-up-and-down movement, his ill humor making his black face look like a thunderhead, ready to shoot lightning at any moment. —  A Grave Denied

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