mass noun
1- a mass of small bubbles in liquid caused by agitation, fermentation, or salivating泡, 泡沫, 口边白沫：
leave the yeast until there is a good head of froth.
将酵母留在里面直至一大堆泡沫冒出。
1.1
- mass noun impure matter that rises to the surface of liquid浮渣：
skim off any surface froth.
撇去面上所有的浮渣。
1.2
- figurative a thing that rises or overflows in a soft, light mass〈喻〉（隆起［或溢出］的）泡沫状东西：
her skirt swirled in a froth of black lace.
她裙子上黑色的透孔花边像升腾的漩涡似的打着转。
1.3
- worthless or insubstantial talk, ideas, or activities无价值（或空洞）的谈话（想法或活动）：
the froth of party politics.
浅薄空洞的党派政治。
no obj.
1- form or contain a rising or overflowing mass of small bubbles起泡沫, 冒泡：
the red blood frothed at his lips
鲜红的血沫从他的嘴唇冒出
as adj. frothing frothing tankards of ale.大杯大杯起沫的麦芽酒。
1.1
- figurative rise or overflow in a soft, light mass〈喻〉泛起, 溢出：
she wore an ivory silk blouse, frothing at neck and cuffs.
她穿着一件乳白色丝绸短衫, 领口和袖口轻软地向四周蓬起。
1.2
- with obj. agitate (a liquid) so as to produce a mass of small bubbles使（液体）起泡沫。
1.3
- (of a person) behave or talk angrily（人）怒气冲冲地行事（或说话）：
the cinema lobby frothed with indignation.
电影院休息厅里激荡着愤慨的气氛。
短语
froth at the mouth
1
- emit a large amount of saliva from the mouth in a bodily seizure（疾病突然发作时）口吐白沫。
1.1
- figurative be very angry〈喻〉非常愤怒。
词源
late Middle English: from Old Norse frotha， frauth.