Definitions

1. adjective

not enclosed or walled in; unconfined

“The unimmured countryside offered a serene escape from the city.”

2. verb

to make (something) no longer enclosed or walled in

“The new development unimmured the previously isolated area with public parks.”

3. noun

a place that is not enclosed or walled in

“The unimmured area of the park was perfect for picnics.”