From *durz (“door”) + *stuþs (“post”). IPA(key): /ˈdu.rɑ.ˌstu.ðɔː/ *<span class="searchmatch">durastudō</span> f doorpost Old English: dūrustod Old Norse: durastoð, dyrastoð Icelandic:...
from the singular because of the lack of umlaut. *durą *<span class="searchmatch">durastudō</span> *durawarduz <span class="searchmatch">Proto</span>-West <span class="searchmatch">Germanic</span>: *dur Old English: duru, doru Middle English: dore, doire...