Defintion of important

Of great significance or value likely to have a profound effect on success survival or well-being

Well I dont know if you mean in your own words or if you mean the actual definition so ill give ya both.-.

but the definition in my words is anything that means a lot to a person or just something very valuble in general can be important

Dictionary definition is of great significance or value; likely to have a profound effect on success, survival, or well-being.