nightdress
noun🔊/ˈnaɪtdres/
🔊/ˈnaɪtdres/
(British English) (North American English or old-fashioned nightgown)
(also informal nightie British English, North American English)
a long loose piece of clothing like a thin dress, worn by a woman or girl in bed 睡裙；女式睡袍 
I prefer pyjamas to nightdresses. 我比睡衣更喜欢睡衣。
