rub up on


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Related to rub up on: pleural rub, RUB A535

rub up on

1. Literally, to rub against someone or something in an intense or persistent manner. The girl I started dating has a dog that rubs up on me whenever I go over to her house. The elephant started rubbing up on our jeep, making me nervous that it would tip us over.
2. To refamiliarize oneself with or stimulate one's memory about a topic or issue. I need to rub up on factorials before attempting to teach them on Monday. I'm spending the weekend rubbing up on Japanese before we fly to Tokyo on Monday.
See also: on, rub, up

rub up on

Refresh one's knowledge, as in I must rub up on my French before we leave for Paris. [Second half of 1700s] Also see brush up, def. 2.
See also: on, rub, up

rub up on

To refresh one's knowledge of: I have to rub up on my French.
See also: on, rub, up