hǽwen
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.
hǽwen
Add: green Hǽwen oððe grǽg gla[u]cum, Wrt. Voc. ii. 40, 72. Basu, hǽwen indicum, 49, 55. Gréne, hǽwen, fáh, deorc ceruleus, i. glaucus. Color est inter album et nigrum, subniger, 130, 34. Hǽwen stán cyanea lapis, 137, 74. Hacele hǽwen subucula iacinthina, An. Ox. 5318 : Wrt. Voc. ii. 87, 56. Héwen (ex) iacintho, 77, 19. Hǽwen, hiacincto, viridis, An. Ox. 35, 2. Hǽwenre deáge, 1058. Þá hǽwnan sǽs marmora glauca, Wrt. Voc. ii. 90, 43. v. blǽ-hǽwen, grén-hǽwen, lín-hǽwen, sweart-hǽwen, wel-hǽwen, and preceding word.
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.

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A Combined List of Abbreviations.