twenty-niner التعريفات والمعاني == English == === Alternative forms === 29er === Etymology === From twenty-nine + -er. === Noun === twenty-niner (plural twenty-niners) A mountain bike with wheels of approximately 29 inches in diameter. شارك هذه المقالة: Facebook Twitter WhatsApp LinkedIn كلمات ذات صلة twenty-niners twenty-nine twenty-ninth twenty-ninths twenty-nine-year-old twenty nine Twentynine Palms twentynine