polliwog

• n. 蝌蚪；首次越过赤道的海员

来自poll,头，-wog,摇摆，词源同wiggle,waggle.比喻用法。

polliwog (n.)

"tadpole," mid-15c., polwygle, probably from pol "head" (see poll (n.)) + wiglen "to wiggle" (see wiggle (v.)). Modern spelling is 1830s, replacing earlier polwigge.