What do you mean you are my backbone?

A: It has its own backbone, which means that people who play a leading role in the group can rely on it as people or things who rely on it or play a core role. Represents the core strength that can be relied on. For example, "father is a backbone, like a living fairy, you can secretly bless him."

The backbone also means having ideas and opinions. For example, if you come, now I have a backbone! The word near the spine is "column".