Wiktionary
vb. 1 To cause to come off by rubbing 2 To clean by rubbing. 3 (context idiomatic English) to be transferred with little or no effort
WordNet
Usage examples of "rub off".
No more reporters should be bothering to call, since Marci had given them their story, but considering the timing, the call was probably from someone who knew her and had just heard her name on television and wanted to talk to her, as if her fifteen minutes of dubious fame could somehow rub off on him/her by association.
I tried to rub off the acid with dirt, and applied saliva to it as I kept on digging.
I ground my cleft against his stiff rod, feeling some of my wetness rub off on him.
It made him want to rub off the powders and paints to see what was beneath.
I guess they figure some of it might rub off, but not enough to worry about.
He moved away just slightly, as if embarrassed, or as if the air of morbid violence clinging to the mercenary were a contagion that could somehow rub off on him, if he got too close.
His luck was best with random things, like dice, but perhaps a little more was beginning to rub off on cards.
If she is viewed as an ineffective leader, that, too, will rub off.
The little dwarf in the chair revolted her and scared her, as though his disability could rub off.
When one of your neighbors was doing well, you wished him all the best of luck, hoping some of it would rub off on you.