Translation

rainosarasu means "Rhinoceros" in English.
It's a katakanization, a loan-word.

rainosarasu is normally written with katakana, as ライノサラス.
rainosarasu written with hiragana is らいのさらす.
rainosarasu does not have kanji.
Romaji ra i no sa ra su
Katakana
Hiragana

Further Reading

Wikipedia: (Rhinoceros)