B2a period of time when workers refuse to work because of an argument with an employer about working conditions, pay levels, or job losses: After last year's long and bitter strike, few people want further industrial action.Most of the workers have ignored their union's call for strike action.Some miners were calling for a nationwide strike in support of 20 colleagues who'd been fired.They have voted to stage lightning(= sudden and short) strikes in pursuit of their demands.We've voted to stage a series of one-day strikes.A wave of strikes swept the country.The result of the strike ballot will be known tomorrow morning.Industrial actionon strike(UK alsoout on strike)›taking part in a strike: The city's bus drivers have been on strike for three weeks.Industrial actiongo on strike›to start to strike: All 2,500 employees went on strike in protest at the decision to close the factory.Industrial action