In Alpine Skiing a boot-out occurs when the skier lays his or her skis so far over on their edges that the ski boot makes contact with the snow causing the ski edges to lose their edge grip.
Boot-out mostly occurs during a carved ski turn and impacts Alpine skiers far more often than snowboarders.
I had a boot-out on that steep section and my skis shot out from under me.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.