1. To improve, make better (as in a complete overhaul or refresher).

2. Informal expression like when using the expression to "brush up" on something.
1. I need to vamp up my wardrobe, now that I'm divorced I need a new look.

2. This book is only in English but it's really good you should read it. It'll give you an opportunity to vamp up your English.
by Chenxi April 10, 2016
Get the vamp up mug.