TgO Lev5:2 :אְנָש דְיִקרַב בְכֹל מִדָעַם מְסָאַב‏ : anyone who approaches any unclean thing
See the entire entry for mɘsaˀˀaḇ adj. unclean

TgO Lev5:2 :בְנִבלַת חַיתָא מְסָאַבתָא‏ : on the unclean dead body of an animal
See the entire entry for nbylh n.f. carrion