What does Nami's tattoo One Piece mean?

Tattoos are the representative of Nami's life experience. At first, Nami's left arm was tattooed with the symbol of the evil Longhai Thief Group. This is an insulting tattoo that the dragon forced Nami to get. After being rescued by Luffy, Nami changed her tattoo into a windmill and an orange. The windmill commemorates his hometown of Cocosia, and the orange commemorates his mother Belmir.