柯林斯詞典tricycle /?tra?s?k?l/ (tricycles) 1. N-COUNT A tricycle is a bike with three wheels, two at the back and one at the front. Tricycles are ridden by young children. (幼兒騎的)三輪車 返回 tricycle劍橋詞典a small vehicle like a bicycle with two wheels at the back and one at the front , used especially by young children (尤指兒童騎的)三輪腳踏車 返回 tricycle