habit/ˈhæbɪt/
n.1. （常与of和动名词连用）习惯；习性to have habit of smoking during meals有吃饭时吸烟的习惯
to change customs and habits移风易俗
It is not easy to break off a bad habit.要改掉一个坏习惯不容易。
It's a good habit to go for a walk after supper.晚饭后散步是个好习惯。
2. （神职人员穿的）法服；衣服a monk's habit和尚的袈裟
3. 心境；体质a cheerful habit of mind心情愉快
She was of lean habit.她体质很瘦。