urdunoun "death" (LT2:342; rather nuru in Tolkien's later Quenya)
úrënoun "heat", also name of tengwa #36 (Appendix E)
úri noun "sun" (MC:214, 221; this is "Qenya"); genitive úrio "sun's" (MC:216)
Úrimë (in some editions Urimë, but this seems to be an error; cf. úrë "heat") noun, name of the eighth month of the year, "August" (Appendix D, SA:ur-, UT:302)
úrinadj. "blazing hot" (LT1:271)
Úrin (Úrind-, as in "g.sg. Úrinden", in LotR-style Quenya this is dat.sg.) noun, a name of the Sun (UR, PE17:148; this stem was struck out in Etym, but several words that must be derived from it occur in LotR, so it seems that Tolkien restored it.)
Úrion (Q?) noun, a title of Fionwë (= later Eönwë); see the LR index. (UR; this stem was struck out in Etym, but several words that must be derived from it occur in LotR, so it seems that Tolkien restored it.)