Slang / Technical term used to describe an accessible wireless network which does not belong to you, often belonging to your neghbours or a local business etc
"I'm on Neighbour Net at the moment cause our internet is cut off"
1. The horrible internet you steal from your neighbours. However bad, it is generally frowned upon to complain due to the fact that it is free access to The Internet.
2. A netting made out of your neighbours. This is a rarer use of the word. Because it's weird really.
Dave: "Oh boy! This neighbour-net is so slow! Yet I'm so thankful!"
Dave's Neighbour: "Sir, please stop stealing our Internet."
Policeman 1: "So what was that Dave guy arrested for?"
Policeman 2: "He was caught making Neighbour-net."
Policeman 1: "That sick bastard!"