Translation

gūzu means "Goose" in English.
It's a katakanization, a loan-word.

gūzu is normally written with katakana, as グーズ.
gūzu written with hiragana is ぐーず.
gūzu does not have kanji.
Romaji guu zu
Katakana
Hiragana

Orthography Notes

Trivia

  • 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 , and "skin," hada .

Further Reading

Wikipedia: 鵞鳥 (Goose)