fiending
n.— «Throughout high school, I watched as many of my friends tried to balance going to class and fiending for the next hit. “Fiending” is just an expression my friends and I use to describe how crazed smokers get when they’re looking for a cigarette.» —“Youths Give Perspective on Tobacco Controversy Segment Number: 13 Show Number: 2074″ by Jacinda Abcarian in Berkeley, Calif. NPR Dec. 27, 1995. (source: Double-Tongued Dictionary)