Where does “bookworm” come from?

Bookworm comes from English book and wyrm, the Old English word for serpent or dragon, ultimately from Proto-Indo-European roots meaning to bend and to break.

bookworm (English): Any of various insects that infest books; An avid...

Definitions

  1. Any of various insects that infest books; An avid...

Ancestry of “bookworm”, step by step

bookworm 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 Book

StepLanguageWordMeaning
1EnglishBookthe Bible
2Germanbūchbook collection of sheets of paper bound together to hinge at one edge; long work fit for publication
3Middle High Germanbuoch
4Old High Germanbuohbook
5Proto-Germanicbōk
6Proto-Germanicbakanąto bake
7Proto-Indo-Europeanbʰeh₃g-to bake, to roast, to fry

Words derived from “bookworm

Every word from Proto-Indo-European lewk-