also rock-bottom
1.
If something has reached rock bottom , it is at such a low level that it cannot go any lower.
Morale in the armed forces was at rock bottom...
N-UNCOUNT
2.
If someone has reached rock bottom , they are in such a bad state or are so completely depressed that their situation could not get any worse.
She was at rock bottom. Her long-term love affair was breaking up and so was she.
N-UNCOUNT
3.
A rock-bottom price or level is a very low one, mainly in advertisements.
What they do offer is a good product at a rock-bottom price.
ADJ : usu ADJ n [ approval ]