英语词汇“umbo”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	umbo
释义	umbo /um"boh/, n. , pl. umbones /um boh"neez/, umbos. 1. a boss on a shield, as one at the center of a circular shield. 2. any similar boss or protuberance. 3. Zool. the beak of a bivalve shell; the protuberance of each valve above the hinge. 4. Anat. the depressed area on the outer surface of the tympanic membrane. 5. a blunt or rounded protuberance arising from a surface, as on a pine cone scale. [1715-25; < L umbo boss (of a shield), knob, projecting part; akin to umbilicus (see UMBILICUS)]
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