Where does “wormhole” come from?

I need to work through this chain carefully, but I notice there's a problem with the etymology provided: it appears corrupted or nonsensical. The chain shows: - English hole | Middle English hole | Old English wyrm | Old English helan | Latin oleum | Ancient Greek ἔλαιον | Latin oleum | Proto-Indo-European -kos This doesn't make linguistic sense. "Wyrm" (worm) and "helan" (to conceal) are Old English words, but they're mixed with Latin "oleum" (oil) and Greek "ἔλαιον" (elaion, oil), and "hole" comes from Old English "hol," not through wyrm. For "wormhole," the compound would logically derive from: - "worm" (Old English wyrm) - "hole" (Old English hol) But

wormhole (English): a hole burrowed by a worm; A hypothetical...

Definitions

  1. a hole burrowed by a worm; A hypothetical...

Ancestry of “wormhole”, step by step

wormhole traces back through two separate lines of ancestry.

via English Worm

StepLanguageWordMeaning
1EnglishWormA generally tubular invertebrate of the annelid phylum; an earthworm
2Middle EnglishwormA worm or similar small wormlike animal that...
3Old Englishwyrmcreeping insect; maggot, grub, worm; snake,...
4Old Englishlēahmeadow; clearing with a pigsty; woodland,...
5Proto-West Germaniclauhclearing; meadow
6Proto-Germaniclauhazclearing; meadow
7Proto-Indo-Europeanlówkosclearing; open space, clearing; field, meadow
8Proto-Indo-Europeanlewḱ-lynx
9Proto-Indo-Europeanlewk-bright; to shine; to see

via English hole

StepLanguageWordMeaning
1EnglishholeA hollow place or cavity; an excavation; a pit;...
2Middle Englishholehealthy; safe; whole, complete, full
3Old Englishhola hole, a hollow; calumny; slander
4Proto-West Germanicholhollow; hole
5Proto-Germanichuląa hollow; depression; hole
6Proto-Germanichulazhollow
7Proto-Indo-Europeanḱel-to cover; to incline

Words derived from “wormhole

Every word from Proto-Indo-European lewk-
wormhole — Etymology, Origin & Word History | Etymology Explorer