Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
testĕus, a, um, adj. [testa], of earthen materials, earthy, earthen (late Lat.): testea terrenaque corpora, Macr. S. 7, 15 med.: indumentum animi (corpus), id. Somn. Scip. 1, 11 fin.: fragmen, Prud. στεφ. 5, 553: vasa, Vulg. Thren. 4, 2.