| 单词 | thunderhead |
| 释义 | thunderhead /thun"deuhr hed'/, n. Meteorol. 1. incus (def. 2). 2. cumulonimbus. 3. the upper portion of a cumulus cloud characterized by dense, sharply defined, cauliflowerlike upper parts and sometimes by great verticality. [1850-55, Amer.; THUNDER + HEAD] |
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