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2.
(spûrj)

A random exclamation shouted to a person or group of people in order to express nothing in particular, other than one's presence. 1

Can also be used as a means of starting or continuing a dwindling conversation. 2

Derives from the common name for the Euphorbia genus of plants: the plant is an illustration of randomness and lack of neccessity, just like the word itself
E.G. 1 John (to Mike whilst approaching him from across the street): "Spurge!"

Mike: "Hey man!"

E.G. 2 Harry (to Tim on, for example, Facebook Chat at the very start of a conversation): "Spuuuuurge!!"

Tim: "Spoouurrge!!!! How's it goin man?"
by hj93 April 19, 2011
 
1.
When you have the sporadic urge to do something wild...
Man... I got the spurge to go bang that pretty lil' thing over there..
by theboymarch April 17, 2008
 
3.
male ejaculate sperm, spooge
wipe the spurge off my pants
by JS June 07, 2004