| 单词 | umbo |
| 释义 | Word Frequency umbo(ˈʌmbəʊ) nounWord forms: plural umbones (ʌmˈbəʊniːz) or umbos 1. a small hump projecting from the centre of the cap in certain mushrooms 2. a hooked prominence occurring at the apex of each half of the shell of a bivalve mollusc 3. anatomy the slightly convex area at the centre of the outer surface of the eardrum, where the malleus is attached on the internal surface 4. a large projecting central boss on a shield, esp on a Saxon shield Derived forms umbonate (ˈʌmbənɪt, -ˌneɪt), umbonal (ˈʌmbənəl) or umbonic (ʌmˈbɒnɪk) adjective Word origin C18: from Latin: boss of a shield, projecting piece |
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