Translation

pīkokku means "Peacock" in English.
It's a katakanization, a loan-word.

pīkokku is normally written with katakana, as ピーコック.
pīkokku written with hiragana is ぴーこっく.
pīkokku does not have kanji.
Romaji pii ko kku
Katakana
Hiragana

Orthography Notes

Further Reading

Wikipedia: 孔雀 (Peafowl)