1
- a machine for making butter by agitating milk or cream（炼制黄油用的）搅乳器。
2
- Brit. a large metal milk can〈英〉盛奶大金属罐。
3
- short for CHURN RATE.CHURN RATE的简称。
1
- with obj.（常作be churned）agitate or turn (milk or cream) in a machine in order to produce butter（为炼制黄油）用搅乳器搅拌（牛奶, 乳酪）：
the cream is ripened before it is churned.
乳酪在用搅拌器搅拌前就已经熟了。
1.1
- produce (butter) in such a way经搅拌器搅拌制造（黄油）。
2
- no obj.(of liquid) move about vigorously（液体）翻腾：
the seas churned
大海翻腾
figurative 〈喻〉her stomach was churning at the thought of the ordeal.
想到那次痛苦的经历, 她胃里一阵翻腾。
2.1
- with obj.（常作be churned）cause (liquid) to move in this way使（液体）翻腾：
in high winds most of the loch is churned up.
风大的时候, 大部分湖面都会翻腾。
2.2
- with obj. break up the surface of (an area of ground)打破（地的）表面：
the earth had been churned up where vehicles had passed through.
车辆经过的地方泥土都被翻开了。
3
- with obj.(of a broker) encourage frequent turnover of (investments) in order to generate commission（经纪人）鼓励频繁（投资）周转额（以赚取佣金）。
词源
Old English cyrin, of Germanic origin; related to Middle Low German kerne and Old Norse kirna.
短语动词
churn something out
- produce something mechanically and in large quantities机械地大量生产：
artists continued to churn out uninteresting works.
艺术家们继续大量炮制乏味的作品。