1
2
a
: an act of occupying seats in a racially segregated establishment in organized protest against discrimination
b
: an act of sitting in the seats or on the floor of an establishment as a means of organized protest
sat in; sitting in; sits in
1
: to take part in or be present at a session of music or discussion as a visitor
—often used with on
invited to sit in on a rehearsal
2
: to participate in a sit-in
Cite this Entry
“Sit-in.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sit-in. Accessed 7 Jul. 2026.
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