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1.
intr.v., -dropped, -drop·ping, -drops.

To watch secretly to the private viewings of others.
I was eaveswatching my coworker looking at porn on his computer.
by Ray Lopez May 27, 2008
 
2.
Reading someones conversation over their shoulder while they are texting or chatting.
I love eaveswatching my girlfriend's chats when she's talking about me.
by johnashley March 22, 2010