| 单词 | billow | 
| 释义 | Word Frequency billow(ˈbɪləʊ) noun 1.  a large sea wave  2.  a swelling or surging mass, as of smoke or sound 3.  a large atmospheric wave, usually in the lee of a hill  4. (plural) poetic the sea itself verb 5.  to rise up, swell out, or cause to rise up or swell out Derived formsbillowing (ˈbillowing) adjective, noun Word originC16: from Old Norse bylgja; related to Swedish bōlja, Danish bölg, Middle High German bulge; see bellow, belly | 
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