Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
tignārĭus, a, um, adj. [tignum], of or belonging to beams: faber, a carpenter, builder, Cic. Rep. 2, 22, 39; id. Brut. 73, 257; Inscr. Orell. 4087 sq.; cf.: Fabros tignarios dicimus non eos duntaxat, qui tigna dolant, sed omnes, qui aedificant, Dig. 50, 16, 235; Vulg. 4 Reg. 22, 6.