Adjective
(board sports) Approaching a wave or obstacle forward, rather than backward
Used other than figuratively or idiomatically: see front, side.
Source: en.wiktionary.orgA right-handed player shooting a forehand shot to the right front corner is shooting a frontside pinch. Source: Internet
A right-handed player shoots a backhand frontside pinch to the left corner and a reverse double pinch to the right corner. Source: Internet
Pinches are classified as frontside or reverse. Source: Internet