monopatín
skateboard
mono-
one, single
+
patín
skate
Monopatín means skateboard and can be thought of as mono-0 (one, single0) + patín1 (skate1), literally a 'single-skate'.
noun
- skateboardA board with small wheels used for riding and performing tricksMi hermano anda en monopatín todos los días. // My brother rides his skateboard every day.