The action of throwing one or more stones, often as a form of aggression or assault, or with the intention of causing damage.
1961 December, “Talking of Trains: B.R. experience with 25kV a.c.”, in Trains Illustrated, page 707:
Porcelain insulators, though generally successful, have proved vulnerable to malicious stone-throwing and particularly in bad weather they have been liable to fracture in flashover where there are many steam locomotive movements; [...].
