Giboshi

Giboshi (擬宝珠) is a kind of ornament used on older Japanese bridges.^[1] In Japan, giboshi bridge ornaments in are said to resemble the bulbous flower of the onion. The ends of giboshi are bulbous and come to a point, resembling the onion domes in Western culture. They are often found in older Japanese bridges, and on bridges in Japanese gardens, temples and shinto shrines.

A giboshi

References