The web is a dungeon feature attached from the floor to ceiling and a trap of sorts. When a character touches the web they will become stuck until removing the web by causing enough damage. Webs are impassable, without being destroyed. They may be found in the dungeon randomly, and will always appear covering holes.
The web can be created through the use of Create Monster or a Wand of Create Monster. If a character has Beast Mastery, the web may become mesmerized, causing it to be 'friendly' to the player. The player can then pass the web without getting stuck. However, Pets cannot, but will not try to kill the web to pass.
A mesmerized web can be interacted with, but still cannot move. [Testing needed to check whether it can hold items or be fed]