Úr

According to the Old English Dictionary:

es;

úr

m. A kind of ox, a bison; urus: also the name of the U-rune :-- Úr ( ᚢ ) byþ ánmód and oferhyrned, feohteþ mid hornum mǽre mórstapa, Runic pm. Kmbl. 339, 7; Rún. 2. (The rune is written without representing a word, Exon. Th. 284, 32; Jul. 706.) [Goth. úraz name of the U-rune: Icel. úrr a kind of ox; úr the name of the U-rune: O. H. Ger. úr-ohso: Ger. auer-ochse.] ur