noun
[ U ] ( informal ) the lowest point or level that is possible :
Prices hit rock bottom.
The marriage had reached rock bottom.
► ˌrock-ˈbottom adjective :
rock-bottom prices
noun
[ U ] ( informal ) the lowest point or level that is possible :
Prices hit rock bottom.
The marriage had reached rock bottom.
► ˌrock-ˈbottom adjective :
rock-bottom prices
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005