Translation

myūru means "Mule" in English.
It's a katakanization, a loan-word.

myūru is normally written with katakana, as ミュール.
myūru written with hiragana is みゅーる.
myūru does not have kanji.
Romaji myuu ru
Katakanaミュ
Hiraganaみゅ

Orthography Notes

Synonyms

Further Reading

Wikipedia: 騾馬 (Mule)