roil
/rɔɪl/verb
1
- with obj. poetic/literary make (a liquid) turbid or muddy by disturbing the sediment〈诗/文〉搅浑（液体）, 使浑浊：
winds roil these waters.
风搅浑了这些水。
1.1
- no obj.(of a liquid) move in a turbulent, swirling manner（液体）被搅动; 翻滚, 翻腾：
the sea roiled below her
海在她下方翻滚着
figurative 〈喻〉a kind of fear roiled in her.
一种恐惧感使她心神不宁。
词源
late 16th cent.: perhaps from Old French ruiler 'mix mortar', from late Latin regulare 'regulate'.