wheelie       
noun [ C ]  informal uk/ˈwiː.li/ us/ˈwiː.li/
 (骑自行车时,前轮抬起,只用后轮骑行的)后轮平衡特技
an act of raising the front wheel of a bicycle off the ground and keeping it in the air while riding the bicycle
  I can do great wheelies on this bike. 我骑这辆车能表演后轮平衡特技。