snag
 n.— «The burn had consumed four acres when Holmes and a few other team members approached a tree known in forestry parlance as a “snag”—dead or dying timber that poses a threat of falling.» —“Firefighter Crushed to Death as Part of Tree Topples” by Eric Bailey in Sacramento, Calif. Los Angeles Times Oct. 5, 2004. (source: Double-Tongued Dictionary)