1.VerbTo extend on or as if by strings, wires, etc.
"Let's string out these lights across the patio."
2.VerbTo prolong or extend in an unnecessary, contrived or time-filling manner.
"Do we really need to string out this discussion any further?; I've run out of things to say, but somehow I need to string out this essay to two thousand words."
3.VerbTo bring under the influence of narcotics.
4.VerbTo experience withdrawal symptoms of an addiction to narcotics.