Translation

daikoku-nezumi means "Brown Rat" in English.

daikoku-nezumi is normally written with katakana, as ダイコクネズミ.
daikoku-nezumi written with hiragana is だいこくねずみ.
daikoku-nezumi written with kanji is 大黒鼠.
This word contains non-jouyou kanji 常用漢字.
Romaji da i ko ku ne zu mi
Hiragana
Katakana
Kanji
Meaning Big Black Rat
School Level 小1 小2

Synonyms

dobu-nezumi 溝鼠, shichirou-nezumi 七郎鼠.[2]
Scientific name: Rattus norvegicus.

Further Reading

Wikipedia: ドブネズミ (Brown_rat)
  1. 大黒鼠 - kotobank.jp, accessed .
  2. 七郎鼠 - kotobank.jp, accessed .