LBED_26_apicketpick·et /ˈpɪkɪt/ noun [countableC]1 (also picket line) a group of people who stand in front of a shop, factory, or other building to protest about something or to stop people from going to work during a STRIKEa picket on the steps of the Federal court building
Workers refused to cross a picket line to unload the fish.
2 (also picketer American EnglishAmE) one person in a picket lineThe pickets persuaded some drivers not to enter the factory.
—picket verb [intransitiveI, transitiveT]Labor unions picketed the plant, protesting at the use of non-union workers.
250 students will be picketing at the college.