(ˈ) ̷ ̷| ̷ ̷shəs adjective
Etymology: Latin testaceus consisting of bricks, covered with a shell, from testa piece of burned clay, brick, shell + -aceus -aceous
1. obsolete : of, relating to, or made of earthenware
2.
a. : having a shell
a testaceous protozoan
b. : consisting of shell or calcareous material
stone … of a pale reddish brick color, and a testaceous composition — Mark Van Doren
3. : of any of the several light colors of bricks, averaging the color pheasant