I. noun
: an all-terrain bicycle with wide knobby tires, straight handlebars, and typically 18 to 21 gears
II. intransitive verb
: to ride a mountain bike
• mountain biker noun
I. noun
: an all-terrain bicycle with wide knobby tires, straight handlebars, and typically 18 to 21 gears
II. intransitive verb
: to ride a mountain bike
• mountain biker noun
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012