Skateboard

wiktionary

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skate +‎  board

etymonline

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skateboard

1964, noun and verb, from skate (v.) on model of surfboard. The phenomenon began c. 1963 in southern California and was nationwide the following summer.

Skateboarding requires only a tapered piece of wood flexibly mounted on roller-skate wheels and a stretch of pavement — preferably downhill and away from traffic. [Life magazine, June 5, 1964]