Definitions
1.VerbTo polish or scrub; to cover (something with a substance) by rubbing."I rubbed up the brass buttons on my jacket to make them shine.; The pitcher rubs up the new baseball with dirt to get a better grip."
2.VerbTo rub (a body part): to massage, give a massage to.
3.VerbTo create (something) by rubbing."to rub up a lather; The new shoe rubbed up a blister on the back of his foot."
4.VerbTo revive one's knowledge of (something); to renew (a skill).
5.VerbTo assault (someone).
6.VerbTo reduce (something) to a powder or paste using friction (with a mortar and pestle, for example); to mix (with something) using friction."to rub up pigments with water or oil"
7.VerbTo excite or awaken (something); to revive or reawaken (something)."to rub up the memory; to rub up old sores"
8.NounAlternative form of rub-up.