Hion

According to the Old English Dictionary:

l. hión,

hion

and add: cf. Heáfodwunde tó bóte . . . Gif ꝥ úterre bán bið þyrel, Ll. Th. i. 92, 15. [Liebermann proposes to read hionne with the meaning 'membrane'. Cf. Dan. hjerne-hinde membrane of the brain, and see note on the word in Ll. Th.] hion