Feminine passive participle from an unused root meaning to found; foundation -- foundation.
H803. ashuyah
[אָשְׁיָה] noun feminine (support) buttress (Arabic column, support, AW NöM 113, אוּשָּׁא ᵑ7, plural אוּשְּׁוָותָא אוּשָּׁיָיתָא,) only plural suffix buttresses of city of Babylon Jeremiah 50:15 אשׁויתיה Kt, אָשְׁיוֺתֶיהָ Qr ("" חוֺמוֺתֶיהָ).
[אָשְׁיָה]
noun feminine wall, bulwark (Talmud אָשִׁיתָא (Levy Nö); Mandean אשיתא wall NöM 113; ᵑ7 plural suffix אֲשִׁיתָהָא (DalmWB אָשְׁיָתַהָא) Jeremiah 50:15, אשיתנא Cant 2:9; Arabic column, support is loan-word according to Frä11); — only plural suffix bulwarks of city of Babylon,' etc.