Translation

aiai means "Aye-Aye" in English.
It's a katakanization, a loan-word.

aiai is normally written with katakana, as アイアイ.
aiai written with hiragana is あいあい.
aiai does not have kanji.
Romaji a i a i
Katakana
Hiragana

Trivia

  • The old Japanese name for the Aye-Aye, yubizaru 指猿, literally "finger monkey," comes from the fact their middle finger is... weird. It's thin. And honestly creepy. I mean, seriously, it's really, really creepy. If you ever saw it from up close you may nope away faster than you can say "aye, Jesus, that's creepy!"

Synonyms

Scientific name: Daubentonia madagascariensis.

Further Reading

Wikipedia: アイアイ (Aye-aye)