Definition:Trail

Definition
A trail is a walk in which all edges are distinct.

A trail between two vertices $u$ and $v$ is called a $u$-$v$ trail.

The set of vertices and edges which go to make up a trail form a subgraph.

This subgraph itself is also referred to as a trail.

Also see

 * Definition:Circuit (Graph Theory), otherwise known as a Definition:Closed Trail