orbit1/ˋɔrbIt; ˈɔːbət or ˈɔːbIt/n [C] the circle that something moves in when it is going around the Earth, the sun etc〔环绕地球﹑太阳等运行的〕轨道
orbit2v [I,T] to travel in space around a larger object such as the Earth, the sun etc 环绕〔地球﹑太阳等〕运行﹐沿轨道运行: a satellite that orbits the Earth 绕地球运行的人造卫星