Ge-réþru

According to the Old English Dictionary:

ge-réþru

pl. n. Rudder, helm [the steering was done by means of an oar] :-- Ða men ða ðe beóþ winnende in sciplícum gewinne híg ðonne begáþ ǽrost ða geréþru in ðære hýþe qui in nauali prælio demicaturi sunt ante in portu inflectant gubernacula, Shrn. 35, 8: 9. Geréþru vel scipgetawu aplustre, Ælfc. Gl. 103; Wrt. Voc. 56, 19. Geréþra aplustra, Gl. Mett. 15. On ánum báte bútan ǽlcum geréþrum in a boat without any means of steering, Chr. 891; Erl. 88, 6, see note on this passage. 'Geréþrum' can however hardly be a case of 'geréþra' nauta, as the singular number would be used with 'ǽlc;' it is rather a plural like 'geatwe' or 'frætwe.' ge-reþru