horu
This might be just a supplemental entry adding to an entry in the Main Volume.
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
horu
Add:: n. [A weak form occurs, Hml. S. 7, 129.] I. of physical impurity (or uncertain) Fúles horewes squalentis ceni, An. Ox. 3598. Mixe, horwe ceno, i. luto, Wrt. Voc. ii. 130, 71. Fúle horewas putidos (ergastuli) squalores, An. Ox. 11, 134. II. of moral impurity Mód mid horuwe (sorde ) gewǽht, Hy. S. 37, 12. Hwæt ligst þú on horwe leahtrum áfylled, Dóm. L. 77. Mid þám fúlestan horwe (incest ), Ap. Th. 24, 14. Micel tódǽlð betwuh clǽnnysse fǽmnenlicre sáwle and horwu (sordes ) hyre, seó þe manegra gǽlsum underlæg, Scint. 69, 14. Þá áfeormadan fram horwum expiatos sordibus, Hy. S. 4, 22: Dóm. L. 156: Cant. M. ad fil. 5. Fram eallum horwum heálicra leahtra, Hml. Th. ii. 242, 31. Þurh ælfremede horwan gefýled, Hml. S. 7, 129. [v. N. E. D. hore.]
This is a supplementary entry with editorial changes to an entry in the main volume of the dictionary. Look under the 'Possibly connected entries' below, or for the same headword in the list to the left.

A Combined List of Abbreviations.

Abbreviation not recognized. See:

A Combined List of Abbreviations.