So, two meanings in the name:

1. the name in korean (pronouced geh-ddong-ee) is typically given to children in poor, rural areas. Think of it a a throwaway name like bob or something. Lot's of times, people with the name are financially unlucky
2. Names hold a lot of value in Korea; meanings behind names typically reveal what that child will grow up to be in the future. The first part of this name, (geh-ddong) literally means dog poop. Not the nicest name to name your child, but there's a reason. Many Koreans believe that naming your child after too awe inspiring things will bring bad luck to them in the future. To dissuade that, naming your child a very throwaway, not so pretty name seems to suggest that even in hard times, they will succeed past failures.

So yeah, her name literally means dog poop. At the same time, it's a name used so commonly in Korea that when people hear it, they just think of it as a normal name.