Node

Imprecise term which can refer to:

• A content object (example: Drupal)
• A specific point in a tree structure, such as a content tree or taxonomy. In some systems, a content tree is made up of "nodes" which are then linked to content objects. This gives the benefit of more than one node linking to the same object, which functionally means that objects appears in two places in the tree.

This usage seems to come from the usage of "node" in botany:

The part of a plant stem from which one or more leaves emerge, often forming a slight swelling or knob.

And the corresponding usage in geometry:

A point at which lines or pathways intersect or branch; a central or connecting point.

Two other usages in technology have nothing to do with CMS, but contribute to the ambiguity of the term.

• A server-side JavaScript framework (more precisely: "Node.js" but colloquially just "Node")
• A piece of hardware attached to a network