An example of something grimy is a shovel that has been lying in mud and filth for weeks; a grimy shovel.
Her head hurt, and she felt grimy from the night sweats.
She managed to squirm free of his arms for a second and started to scream, but he clamped a grimy hand over her mouth.
The children who crowd these grimy alleys, half-clad and underfed, shrink away from your outstretched hand as if from a blow.
All three were disciples of Erasmus, the great apostle of a new, tolerant, scholarly religion very different from the grimy pedantry of the medieval doctors.
Cleaning - All watches get a little dirty and grimy over time.