Definition of "sit-in" [sit-in]

• An organized protest demonstration in which participants seat themselves in an appropriate place and refuse to move. (noun)
• The act of occupying the seats or an area of a segregated establishment to protest racial discrimination. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Witnesses said the clashes began when riot police dismantled a small tent camp set up to commemorate the hundreds of protesters killed in the uprising and attacked around 200 peaceful demonstrators who had camped in the square overnight in an attempt to restart a long-term sit-in there."
• "Witnesses said the violence began when riot police dismantled a small tent camp set up to commemorate protesters killed in the uprising and attacked around 200 peaceful demonstrators who had camped out in the square overnight in an attempt to restart a long-term sit-in there."
• "Police and protesters clashed for control of downtown Cairo's Tahrir Square on Saturday, after security forces tried to stop activists from staging a long-term sit-in in the symbolic site."