Thine (5)
(Other definitions for yours that I've seen before include "Family, perhaps" , "Belonging to you" , "ie Not mine" , "Word found before "sincerely" or "faithfully" in a letter" , "solvers" .)
(Other definitions for your that I've seen before include "Thy" , "See 5" , "See 14" , "Second person's" , "See 12" .)