thunder lizard

English

Noun

thunder lizard (plural thunder lizards)

1. (informal) The apatosaurus or brontosaurus.
   • 1952, “The Trail of the Thunder Lizard”, in Life, volume 33, number 21, page 67:

     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.