Conjecture.
Part of speech: Noun, proper
Inflection: Noun = Unknown/unspecified noun declension
Streitberg 1910, p. 3 – text | facs.
[Aia] [prop. noun] oder [Gai] Αϊα oder Γαϊ, Konjekturen für †Aai Neh 7,32 D.