rock-bottomˌrock-ˈbottom adjectiveadj rock-bottom price/rate/level etcCOMMERCE a price etc that is as low as it can possibly beHe was forced to sell his goods at rock-bottom prices.
Interest rates in Japan are already at rock-bottom levels.
—rock bottom noun [uncountableU]Thousands of shop staff face the sack as sales hit rock bottom.