to decide to do sth, knowing that it might be the wrong choice :
We took a chance on the weather and planned to have the party outside.
to decide to do sth, knowing that it might be the wrong choice :
We took a chance on the weather and planned to have the party outside.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005