1. [ adjective ] (geology) of or relating to the Cretaceous geologic era

"cretaceous rocks"

2. [ adjective ] abounding in chalk
Related terms: chalk
3. [ noun ] (geology) from 63 million to 135 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
Synonyms: Cretaceous_period
Related terms: period Mesozoic
Similar spelling:   Crutcher