noun
small gate in a mud or stone wall
Refers to a modest opening or wicket gate set into an earthen or stone enclosure, often found in traditional Japanese gardens or fortifications.
古い武家屋敷の土塀に穴門が残っている。
A small gate remains in the mud wall of the old samurai residence.
Compound of 穴 (あな, 'hole') and 門 (もん, 'gate'), literally 'hole gate'. The exact historical derivation is uncertain, but the term likely arose from the appearance of a small opening in a wall.