Translation

donkī means "Donkey" in English.
It's a katakanization, a loan-word.

donkī is normally written with katakana, as ドンキー.
donkī written with hiragana is どんきー.
donkī does not have kanji.
Romaji do n kii
Katakana
Hiragana

Orthography Notes

Trivia

  • donkii kongu ドンキーコング is the Japanese title of the video-game Donkey Kong."

Further Reading

Wikipedia: ロバ (Donkey)
ashika 海驢.