( BrE , informal ) to be in the middle of an activity or a project :
The award-winning novelist often has three or four books on the go at once.
( BrE , informal ) to be in the middle of an activity or a project :
The award-winning novelist often has three or four books on the go at once.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005