Definitions for "Miller flip"
An invert where the halfpipe wall is approached riding forward, the front hand is planted, a 360 degree frontside rotation is made, and the rider lands riding fakie.
A frontside invert with 360 degree turn
An invert in which the rider approaches the halfpipe wall riding forward, plants the right hand, does a 360-degree frontside rotation and rides out fakie (boarding backwards).