Translation

kurou means "Crow" in English.
It's a katakanization, a loan-word.

kurou is normally written with katakana, as クロウ.
kurou written with hiragana is くろう.
kurou does not have kanji.
Romaji ku ro u
Katakana
Hiragana

Synonyms

karasu カラス, Corvus.

Further Reading

Wikipedia: カラス (Crow)