handplanthand‧plant /ˈhændplɑːnt $ -plænt/ noun [countable] 
a movement in skateboarding and snowboarding in which you hold the back part of your board with one hand and put your other hand down on the top edge of a ramp as you turn to ride back down the ramp
a movement in skateboarding and snowboarding in which you hold the back part of your board with one hand and put your other hand down on the top edge of a ramp as you turn to ride back down the ramp