A word appearing in its plural form oromardi, referring to the dwelling of Varda and Manwë on the slopes of mount Taniquetil from the Namárië poem (LotR/377). It is a combination of oro- “up, aloft” and mar(da) “dwelling” (PE17/63-64). Though not a proper name, I suspect this word was poetic and not in general use.
Quenya
oromar
high (lofty) dwelling, hall
oromar
noun. lofty hall, high-mansion, high (lofty) dwelling
oromar (oromard-) noun "high (lofty) dwelling, hall" (PM17:63-64), pl oromardi "high halls" or "high mansions" in Namárië (cf. RGEO:66, PE17:64), referring to the mansions of Manwë and Varda upon Mt. Taniquetil. See mar #1. Distinguish oromardi noun "mountain-dwellers" (PE16:96), pl. of *oromar(d-).