A message indicating that a user from a network has joined/returned.

Something you really want to see when it is next to your girlfriend's/boyfriend's screen name.
\Tina signed on
Tom: OH HEY BABY!!!
Tom: welcome back!!!!
Tina: hu iz dis?
Tom: it's your boy!!!
Tina: rite......
\Tina is away
Tom: ****
by Godknown March 25, 2006
Signs are actions a person does/says to subtly indicate to another that they are interested in them, be it romantically or sexually. Life is really just a question of reading the signs.
Dude #1: Man, that girl just told me she wants someone to watch Frozen with
Dude #2: It's a sign!
by oborawatabinost January 21, 2015
To reaffirm one's unemployed status for the purpose of collecting unemployment benefits. (UK)
So why? What have you learnt? If you can have a Number One, anything is possible. Don't forget to sign on.
by katharevousa April 4, 2011
Coolest name ever!!!

Old Nordic, somewhat common in Denmark.
Derives from old Norse sigr = 'victory' and nýr = 'new, young'

Other Scandinavian variants are Signhild, Signý and Signa
In Nordic mythology, name of the goddess Sigyn, wife of Loki
"Hey, is that Signe over there?"
"Yep."
"Cool!"

by Ragnhild December 13, 2007
The name of the best friend that anyone could ever ask for. She over worries about the ones that she loves and she cares about everyone close to her. She's good at everything and everybody loves her. If you get the chance to get to know a Signe, then do it.
"Signe is just the sweetest! She's always so nice."

"You're so sweet. What's your name?"
"Signe."
"That explains everything."
by scandinavianbrunette September 22, 2014
A terribly awesome person thats good at everything and will continue to be the best quality of person that you could ever imagine...plus 10
AMAZIN!
"Signe is so amazing she once did 3 lines"

"is that signe... i think my eyes are bleeding, its a good thing"
by Daniel Cee September 24, 2006
1. To agree with something someone has said or an idea.
"I think they should make Canada the 2nd New York."
/signed
by JDM March 6, 2006