Where does “蚯蚓蜥蜴” come from?

蚯蚓蜥蜴 (Japanese) comes from Japanese 蚯蚓, from Middle Chinese 蚯蚓.

蚯蚓蜥蜴 (Japanese): worm lizard

Definitions

Step	Language	Word	Meaning
1	Japanese	蚯蚓	an earthworm
2	Middle Chinese	蚯蚓	—

蚯蚓蜥蜴 — Etymology, Origin & Word History | Etymology Explorer