a bicycle designed for off-road use, typically having a smaller and sturdier frame and smaller and wider tires than a standard bicycle.
a type of sturdy bicycle with at least 16 and up to 21 gears, straight handlebars, and heavy-duty tyres
noun 1. a bluebird, Siala currucoides, of western North America.
/ˈmaʊntɪnˌbɔːd/ noun 1. a type of skateboard specially designed for rough terrain and steep slopes, having four large wheels linked by a suspension system
noun 1. a European composite plant, Centaurea montana, having raylike blue flowerheads.
noun a type of extreme sport using a skateboard-like board to descend mountain terrain; a combination of snowboarding, skateboarding, and mountain biking; also called dirtboarding Examples Mountainboarding requires special all-terrain boards. Usage Note mountainboard n, v