"Second chance" means giving someone another opportunity or a fresh start after they have made a mistake or failed at something before. Full definition
We lead the fight against blood cancer by working with families and communities to recruit bone marrow donors to provide patients with second chances at life. (myintimcity.com)
The group believes in giving second chances to both animals and people and so they work tirelessly to meet this end. (animal-rescue.us)
There are certain things that you don't get second chances for. (sbnation.com)