dandle
/ˈdændl/verb
with obj.
1- move (a baby or young child) up and down in a playful or affectionate way上下摇动着逗弄（婴儿, 小孩）。
1.1
- move (something) lightly up and down上下轻摇：
dandling the halter rope, he gently urged the pony's head up.
他轻摇缰绳, 让小马抬起头来。
词源
mid 16th cent.: of unknown origin.