rivulet

rivulet
/ˈrɪvjulɪt; `rɪvjəlɪt/ n
small stream 小溪; 细流
    rivulets running down the mountainside 从山上流下来的小溪
    rivulets of sweat on his forehead 他前额上淌著的汗水.

牛津英汉双解词典