noun
cockatoo
Refers to the bird family Cacatuidae. The kanji form 巴丹 is ateji.
動物園で白いバタンを見た。
I saw a white cockatoo at the zoo.
The reading ばたん likely derives from English 'cockatoo' via Malay 'kakatua' or Dutch 'kaketoe', with the kanji 巴丹 used as ateji.