Meaning
牡蛎 (かき, Kaki) is Oyster — a Japanese food (water animals).
What is Oyster?
Kaki refers to oysters. These are some of the more popular varieties: Romaji Katakana Species iwagaki イワガキ[?] Crassostrea nippona itabogaki イタボガキ Ostrea denselamellosa magaki マガキ Crassostrea gigas