( informal ) used to say that you need or would like to have sth :
I could do with a drink!
Her hair could have done with a wash.
( informal ) used to say that you need or would like to have sth :
I could do with a drink!
Her hair could have done with a wash.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005