Etymograph

English

thunderworm

From thunder + worm, so called because it leaves its burrows after a thunderstorm.

A compound of thunder + worm

Proto-Indo-European *(s)ten-

Proto-Germanic *þunraz

Proto-West Germanic *þunr

Old English þunor

Middle English thunder

English thunder

Proto-Indo-European *wr̥mis

Proto-Germanic *wurmiz

Proto-West Germanic *wurmi

Old English weorm

Middle English werm

English worm

The story

From thunder + worm, so called because it leaves its burrows after a thunderstorm.

Full etymology on Wiktionary

Today it means

noun A small burrowing snake-like lizard (Rhineura floridana) native to Florida.

Sources

Sources: Wiktionary, “thunderworm”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / thunderworm