1. n. The Facebook's outreach to passively-aggressive suitors, stalkers, and lushes. comes in the form of an announcement of itself on your Home page. See poke back and hide poke.
2 v. to perform the process of sending a poke.
"Well, Jim, Jack, and Johnny, who needs a poke tonight?"
an action on facebook letting someone know you thought about them that day.
I was flipping through an oldbook that a friend borrowed a couple years ago, and I noticed her notes in the margin. I looked her up on facebook and poked her.