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Wiktionary
rub up

n. (alternative form of rub-up English) vb. 1 (context transitive English) To polish 2 (context transitive English) To massage, give a massage to 3 (context intransitive English) To revive knowledge, to review or revise 4 (context transitive English) To excite; to awaken; to rouse to action

WordNet
rub up

n. a review that refreshes your memory; "I need a rub up on my Latin"

Usage examples of "rub up".

All this time he's trying to rub up with something that looks like a piece of red fire hose.

Something about him made her want to rub up against him like a cat begging to be stroked.

The movement made the fur on the sleeves rub up and down my body, from my butt to my shoulders.

He'd learn why merchants would rub up against anyone along the Road, except in the Shire and Spiral Town.

But every day in the college you rub up against what's left of the Anglo Irish.

One went to my left hip to hold my body to him, and the other began to rub up and down my thigh with the quickening motion.

It picked its way over the ruined carpet to rub up against the boy’.

And the best way you can work is to get that food off this bed and take that blanket off and come rub up against me.