gachou ガチョウ

Translation

gachou means "Goose" or "Geese" in English.

gachou is normally written with katakana, as ガチョウ.
gachou written with hiragana is がちょう.

gachou written with kanji is 鵞鳥.
This word contains non-jouyou kanji 常用漢字.

gachou may also be written as 鵝鳥.

ちょ is a compound kana representing a single syllable with multiple characters.

Geese is the plural of Goose, but because of how plurals work in Japanese, the same Japanese word that's used for "Goose" in the singular is also used for "Geese" in the plural.
"Goose bumps" in Japanese is torihada 鳥肌, written with the kanji for the words "bird," tori 鳥, and "skin," hada 肌.

Beware: some kanji that are difficult to handwrite are easy to type on the computer, which may skew the usage statistics.