to make new again; to restore
to freshness, perfection, or vigor; to give new life to; to rejuvenate
; to reestablish; to recreate; to rebuild; specifically, to substitute for (an old obligation or right) a new one of the same nature; to continue in force; to make again; as, to renew a lease, note, or patent
"in such a night Medea gathered the enchanted herbs That did renew old son. -Shak."