v.1. To make something clean or shiny: The student polished off the apple and handed it to the teacher. I polished the vase off with a cloth and set it on the table.
2. To eliminate something, such as rust or a stain by rubbing: Please polish that spot off the doorknob. After much scrubbing, I finally polished off the stain.
3. Slang To finish or consume something enthusiastically: I polished off that last piece of cake. After we polish this pizza off, let's get dessert.