thunder lizard

noun

noun

Etymology From thunder + lizard

Informal The apatosaurus or brontosaurus.

The footprints have already settled one old argument about the Thunder Lizard's habits. Scientists had once argued that the animal's legs could not have supported its tremendous bulk on land and that it was only capable of swimming.1952, “The Trail of the Thunder Lizard”, in Life, volume 33, number 21, page 67:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.