Real Dictionary

sabotage
If a machine, railway line, or bridge is sabotaged, it is deliberately damaged or destroyed, for example in a war or as a protest.

sabotage in American English
intentional destruction of machines, waste of materials, etc., as by employees during labor disputes
to engage in sabotage
to injure or destroy by sabotage
noun: any underhand interference with production, work, etc., in a plant, factory, etc., as by enemy agents during wartime or by employees during a trade dispute
transitive verb: to injure or attack by sabotage

sabotage in British English
noun: the deliberate destruction, disruption, or damage of equipment, a public service, etc, as by enemy agents, dissatisfied employees, etc
verb: to destroy, damage, or disrupt, esp by secret means