ultimately from <span class="searchmatch">Proto</span>-Indo-European *mewr-. *<span class="searchmatch">mauˀras</span> m mud East Baltic: Latgalian: <span class="searchmatch">maura</span> Latvian: maurs Lithuanian: <span class="searchmatch">máuras</span>, maurai̇̃ <span class="searchmatch">Proto</span>-<span class="searchmatch">Slavic</span>: *murъ Polish:...
from <span class="searchmatch">Proto</span>-<span class="searchmatch">Balto</span>-<span class="searchmatch">Slavic</span> *<span class="searchmatch">mauˀras</span> (“mud”). *murava f green, sward (expanse of land covered in dense grass) * -asъ is the expected <span class="searchmatch">Balto</span>-<span class="searchmatch">Slavic</span> form but...