鯖の尾

Literally, “mackerel's tail”, 鯖(さば) (saba, “mackerel”) + の (no, possessive particle) + 尾(お) (o, “tail”)

• IPA^(key): [sa̠ba̠ no̞ o̞]

鯖(さば)の尾(お) or 鯖(サバ)の尾(オ) • (saba no o) 

1. Dichocarpum dicarpon
2. a helmet shape resembling a mackerel's tail
3. (architecture) a decorative metal door fitting resembling a mackerel's tail
4. a type of arrowhead resembling a mackerel's tail

As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary).