rub up

Short definition from Wiktionary

Verb

1. 1
   To polish or scrub; to cover (something with a substance) by rubbing.
2. 2
   To rub (a body part): to massage, give a massage to.
3. 3
   To create (something) by rubbing.
4. 4
   To revive one's knowledge of (something); to renew (a skill).
5. 5
   To assault (someone).
6. 6
   To reduce (something) to a powder or paste using friction (with a mortar and pestle, for example); to mix (with something) using friction.
7. 7
   To excite or awaken (something); to revive or reawaken (something).

Noun

1. 1
   Alternative form of rub-up.
2. 2
   The action of rubbing, for example polishing or massaging.
3. 3
   The act of bringing old information to the front of one's memory.
4. 4
   A party, especially one that is spontaneous and involves music and dancing.
5. 5
   An encounter (with someone).
6. 6
   The act of masturbating.