lhcm (asker) May 13, 2008:

ticket stub is PART of a ticket, for example, we visit a zoo,we buy an entry ticket at the ticket office. And when we pass the gate, there is a staff member checking the tickets, he tears a part from the ticket indicating that the ticket has been used, and returns part of the ticket to the visitor. Normally there is a dotted line between those two parts of a ticket, for tearing it easily.