不知火
also: しらぬひ
し
ら
ぬ
い
Meanings
1
mysterious sea lights; phosphorescent light on the sea
Refers to a legendary atmospheric phenomenon seen off the coast of Kyushu, often described as ghostly flames or lights over the water. Also used poetically.
Shiranui is a mysterious light phenomenon said to be seen in the Yatsushiro Sea in Kyushu.
2
shiranui citrus; sumo citrus; dekopon
A seedless, sweet citrus fruit with a distinctive bump at the top. Often marketed as 'dekopon' in Japan and 'sumo citrus' abroad. The reading しらぬい is standard for this sense.
See also: デコポン
In winter, shiranui citrus is often sold at supermarkets.
Shiranui citrus is sweet, juicy, and very popular.