Does this data structure have a name? Sort of a "linked matrix"?

Question

Let's say I wanted similar functionality to a doubly linked list but needed a matrix instead so that each node was structured like this:

public class Node
{
    Node Up, Down, Left, Right;
    object Value;
}

Is there a name for such a structure? I've looked through this Wikipedia listing of data structures but didn't see anything similar. Unless I just missed it.

Answer 1

This data structure is sometimes called a mesh. The representation you have shown here is a species of directed graph.

Answer 2

Multiply linked list.

http://en.wikipedia.org/wiki/Linked_list