/bɔɪl; bɔɪl/
n (usu painful) infected swelling under the skin, producing pus （常为疼痛的）皮下脓肿.

/bɔɪl; bɔɪl/
v
1 (a) [I] (of a liquid) bubble up and change to vapour by being heated （指液体）沸腾; （水）开
*When water boils it turns into steam. 水沸腾而变成蒸汽.
* The kettle (ie The water in the kettle) is boiling. 壶（里的水）开了.
* Have the potatoes (ie Has the water in which the potatoes are being cooked) boiled yet? 煮马铃薯的水开了吗? =>Usage at water1 用法见 water1.
(b) [I, Ip] ~ (away) continue to boil 不断沸腾
*There's a saucepan boiling away on the stove. 炉子上锅里的水一直开着.
2 [Tn] cause (a liquid) to boil 使（液体）沸腾
*boil some water for the rice 把水煮开做饭.
3 [I, Tn, Dn.n, Dn.pr] ~ sth (for sb) cook or wash sth in boiling water 用开水煮或洗某物
*boiled cabbage, carrots, potatoes, etc 煮熟的洋白菜、胡萝卜、马铃薯等
* Please boil me an egg/boil an egg for me. 请给我煮一个鸡蛋. =>Usage at cook 用法见 cook.
4 [I, Ip] be very angry or agitated 愤怒; 激动
*He was boiling (over) with rage. 他怒火中烧.
5 (idm 习语) boil `dry (of a liquid) boil until there is none left （指液体）煮乾
*Don't let the pan boil dry. 别把锅里的水煮乾了. keep the pot boiling => pot1. make sb's blood boil => blood1.
6 (phr v) boil (sth) away (cause sth to) boil until nothing remains; evaporate (sth) （使某物）烧乾; 使（某物）蒸发
*The water in the kettle had all boiled away. 壶里的水完全烧乾了. boil (sth) down reduce or be reduced by boiling 煮浓; 熬浓. boil sth down (to sth) (infml 口) summarize sth; condense sth 归纳（某事物）; 浓缩某事物
*Could you boil that article down to
400 words? 你能把这篇文章缩写成400字吗? boil down to sth (be able to) be summarized as sth （能）归结为某事物
*The issue really boils down to a clash between left and right. 这场争论确实可归结为左派与右派之间的冲突. boil over
(a) (of liquid in a pan, etc) boil and flow over the side of a pan, etc （指锅等容器中的液体）沸腾而溢出
*The milk is boiling over. 牛奶沸腾得溢出来了.
(b) (infml 口) be very angry 非常恼火.
(c) (of a situation, quarrel, etc) reach a point of crisis; explode （指形势、争论等）达到危急关头; 爆发
*The crisis is i

n
1 act of boiling 沸腾.
2 (idm 习语) be on the `boil be boiling 沸腾着. bring sth to the `boil heat sth until it boils 将某物煮至沸腾
*Bring the mixture to the boil, then let it simmer for ten minutes. 把混合物煮至沸腾, 然後再用文火煮十分钟. come to the `boil begin to boil 开始沸腾. off the `boil having just stopped boiling 停止沸腾
*(fig infml 比喻, 口) He began by playing brilliantly but he's rather gone off the boil (ie he has begun playing less well) in the last few minutes. 一开始他表现得非常出色, 但最後几分钟就不怎么好了.