Dictionary

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.

To enclose with, or as if with, a wall or walls.

Example: He walled the study with books.

To boil.

To well, as water; spring.

A spring of water.

A kind of knot often used at the end of a rope; a wall knot or wale.

To make a wall knot on the end of (a rope).