noun
Fudō; Acala; fierce Buddhist deity
Familiar, often affectionate name for Fudō Myōō (Acala), a wrathful Wisdom King in Japanese Buddhism. Commonly used in everyday speech and at local temples.
See also: 不動明王 (ふどうみょうおう)
I went to pray at the local Fudō shrine.
お不動さんは怖い顔をしているけど、実は優しい仏様なんだよ。
Fudō-san has a scary face, but he's actually a kind deity.