Brush Up On
Meaning and usage of the word/phrase 'Brush Up On'.
Meaning: Practice or improve your knowledge of something.
Usage: Exams are approaching and I think I need to brush up on my notes.
Sample Dialogue
A: I want to brush up my conversational English.
B: Yes, its need of the time and you must do it.
A: Please guide me; I want to speak good English.
B: Okay, in my opinion you just go for ‘Apex Digitalz Spoken English’ course. I
am sure you will learn number of new things.