IPA: /ʌnˈwɔld/
KK: /ʌnˈwɔld/
Not surrounded by walls; open or exposed.
The unwalled garden allowed the flowers to bloom freely in the sunlight.
Unwalled → It is formed from "un-" (meaning not) and "walled" (from Old English "weall", meaning a wall). The word "unwalled" means not having a wall or barrier.
Think of 'not' ('un-') having a 'wall' ('walled') — that's why unwalled means without a wall.