Jcing is an abbreviated version of 'Just Chilling'
Guy1: What you up to today mate?
by TruestOfLads September 08, 2011
Abbreviated term for Jewel Crafting. Commonly used MMORPG's such as World of Warcraft.
JCing really compliments mining, so does blacksmithing.
by Damien256 May 28, 2008