/ku:l; kul/
adj (-er, -est)
1 (a) fairly cold; not hot or warm 凉的; 不热的
*a cool breeze, day, surface 凉爽的微风、一天、表面
* cool autumn weather 秋凉天气
* Let's sit in the shade and keep cool. 咱们坐在荫凉处乘乘凉吧.
* The coffee's not cool enough to drink. 咖啡还不够凉, 不能喝.
(b) giving a (usu pleasant) feeling of being not too warm 凉快的; 凉爽的
*a cool room, dress, etc 凉爽的房间、连衣裙等
* a cool cotton shirt 凉快的棉布衬衫.
(c) (of colours) suggesting coolness （指颜色）给人以凉爽感觉的, 冷色的
*a room painted in cool greens and blues 涂上能给人以凉爽感觉的绿色和蓝色的房间.
2 calm; unexcited 冷静的; 镇定的
*Keep cool! 保持冷静!
* She always remains cool, calm and collected in a crisis. 她在危难中总能保持冷静、平静和镇静.
* He has a cool head, ie doesn't get agitated. 他头脑冷静（不易冲动）.
3 ~ (about sth); ~ (towards sb) not showing interest, enthusiasm or friendliness 冷淡的; 冷漠的; 冷冰冰的
*She was decidedly cool about the proposal. 她对这个提议漠然置之.
* They gave the Prime Minister a cool reception. 他们很冷淡地接待了这位首相.
4 calmly bold or impudent 满不在乎的; 厚颜无耻的
*You should have seen the cool way she took my radio without even asking. 你没瞧见她那满不在乎的样子, 连问也不问就把我的收音机拿走了.
5 [attrib 作定语] (infml 口) (said esp of sums of money, distances, etc, emphasizing their largeness 附加于钱、距离等数目之 前以强调其数目之大)
*The car cost a cool twenty thousand. 这辆汽车足足两万元.
6 (dated sl 旧, 俚 esp US) pleasant; fine 令人愉快的; 棒的
*Her guy's real cool. 她的男朋友真帅.
7 (idm 习语) (as) ,cool as a `cucumber very calm and controlled, esp in difficult circumstances （尤指在困难情况下）从容不迫的; 泰然自若的. a cool `customer (infml 口) calmly bold or impudent person 行若无事的人; 无耻之徒
*She just took out her purse and paid a thousand in cash
*what a cool customer! 她从容地掏出钱夹付了一千镑现金, 多么豪爽! play it `cool (infml 口) deal calmly with a situation; not get excited 泰然处之.

n
1 the cool [sing] cool air or place; coolness 凉爽的空气或地方; 凉快
*step out of the sun into the cool 到荫凉处去躲避烈日
* the pleasant cool of the evening 傍晚时的凉爽宜人.
2 (idm 习语) keep/lose one's cool (infml 口) remain calm/get excited, angry, etc 保持冷静[情不自禁、怒不可遏]等.

/ku:l; kul/
v
1 [I, Ip, Tn, Tn.p] ~ (sth/sb) (down/off) become or make cool or cooler （使）变凉
*The hot metal contracts as it cools (down). 热的金属一冷（下来）就收缩.
* Let the hot pie cool (off) before serving. 热馅饼凉了再吃.
* A cooling drink is welcome on a hot day. 在热天清凉饮料很受欢迎.
* (fig 比喻) Her unresponsiveness failed to cool his ardour. 她对他无动于衷, 这并未能冷却他的感情.
2 (idm 习语) `cool it (sl 俚) calm down 冷静下来
*Cool it! Don't get so excited! 静一静吧! 别那么激动! ,cool one's `heels be kept waiting 等下去
*Let him cool his heels for a while
*that'll teach him to be impolite. 让他等一会儿吧, 好教训教训他别那么没礼貌.
3 (phr v) cool (sb) down/off (cause sb to) become calm, less excited or less enthusiastic （使某人）冷静、镇静或降低热情
*She's very angry; don't speak to her until she's cooled down a bit. 她气极了, 等她消消气再跟她说话.
* A day in jail cooled him off. 一天的铁窗生活使他冷静了下来.