1. The last or conclusive support, endorsement, or financial commitment given to a project, initiative, or candidate
The project received final backing from the board of directors yesterday.
O projeto recebeu apoio final do conselho de administração ontem.
2. In publishing and bookbinding, the reinforcing material applied to the spine of a book during the final stages of binding
The final backing was carefully applied to strengthen the book's spine.
O reforço final foi cuidadosamente aplicado para reforçar a lombada do livro.