Dashing shield
From SmashWiki, the Super Smash Bros. wiki
The dashing shield is a technique available in Super Smash Bros. Brawl. It is performed by using one's shield during a run (but not during the initial dash animation), which results in a short slide from the dashing momentum. Sliding versions of out-of-shield techniques can result from this, such as a dashing shield grab. The dashing shield can also help with feints. For example, a player can dash toward an opponent, feigning a rush, and then shield; the opponent may fall for the feint and try to retaliate, leaving him or her open to the rusher's real attack. The dashing shield can also be used similarly to the Dash-cancel from Super Smash Bros. Melee.
