Translation

borei means "Oyster" in English.

borei written with kanji is 牡蠣.
This word contains non-jouyou kanji 常用漢字.
borei written with katakana is ボレイ.
borei written with hiragana is ぼれい.
Romaji bo re i
Hiragana
Katakana
Kanji
Meaning Male Oyster
School Level

borei may also be written as 牡蛎.

Further Reading

Wikipedia: 牡蛎 (Oyster)
oushi 牡牛.