wall
/wɔːl//wɔl/noun
Definitions
A rampart of earth, stones etc. built up for defensive purposes.
A structure built for defense surrounding a city, castle etc.
Example: The town wall was surrounded by a moat.
Each of the substantial structures acting either as the exterior of or divisions within a structure.
Example: We're adding another wall in this room during the remodeling. The wind blew against the walls of the tent.
A point of desperation.
verb
Definitions
To enclose with, or as if with, a wall or walls.
Example: He walled the study with books.