This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
The term "inbound", when used in the context of two applications (client/server) communicating via JMS messages, refers to the client application sending a message to the server application.
In other words, the message that is sent from the client application is referred to as an "inbound" message. The message that is sent from the server application to the client application is referred to as an "outbound" message.