noun
finely trimmed moustache; handlebar moustache
Refers to a moustache shaped like the Chinese character 八 (eight), with ends pointing downward or outward. This term is rare; more common terms include 口髭 (くちひげ) or カイゼル髭.
彼は八字髭をきれいに整えていた。
He had his handlebar moustache neatly trimmed.
From 八 (はち, 'eight') + 字 (じ, 'character') + 髭 (ひげ, 'moustache'), referring to the shape of the Chinese character 八.