well thumbed
US /ˌwel ˈθʌmd/
UK /ˌwel ˈθʌmd/

1.
muito manuseado, gasto
having been read or handled a lot and consequently soiled or damaged
:
•
His favorite book was old and well thumbed.
O livro favorito dele era velho e muito manuseado.
•
The dictionary on the shelf was clearly well thumbed.
O dicionário na prateleira estava claramente muito manuseado.