boardslide Syllabification: (board·slide)Pronunciation: /ˈbôrdˌslīd/Definition of boardslide noun (in skateboarding and snowboarding) a maneuver in which the board slides along a rail, ledge, edge of a ramp, etc., on the flat part of its underside between the trucks. boardslide in other Oxford dictionaries Definition of boardslide in the British & World English dictionary