бессмысленное слово из детской песенки

Seesaw Scaradown
Seesaw, scaradown,
This is the way to Londontown.
One knee up and the other knee down,
This is the way to Londontown.
Seesaw, scaradown,
This is the way to Queen Creek town.
One knee up and the other knee down,
This is the way to Queen Creek town.

Возможно, изначально это было See Saw Margery Daw - нечно более осмысленное. See-saw - это вид качелей
https://en.wikipedia.org/wiki/See_Saw_Margery_Daw