The word "vamp" can mean two different things. It can refer to a part of a shoe that covers the top part of your foot or to a character in folklore that drinks blood, usually associated with vampires. Full definition
With a mid-thigh length skirt or dress, show as much of your legs as possible when wearing a skirt or dress, the high vamp of the ankle boot makes you loose lots of leg, so you need to hitch up your hems. (insideoutstyleblog.com)
These mule slide in heels feature a suede leatherette upper, open toe front, one thin single band at front, thick band at vamp with side panel cut outs, stiletto heel, finished with a lightly padded insole for comfort and support. (qupid.com)