The online version of a pound. In a normal context also called a nucks or a fist. Occurs when to homies touch fists as a show of respect.
NORMAL CONTEXT "My buddy Matty put down this sick 3 flip down a double set. Sickest thing I ever seen so I gave him a pound."
ONLINE (Thus the digi or giga)
Matty: Dude I finally landed that 3 flip down the double!
You: Sick dude! *digipound* homie!