From Wiktionary, the free dictionary
Deverbal from read in or read + -in; modelled on lie-in and sit-in.
read-in (plural read-ins)
- (US, historical) A protest in which demonstrators gather in or occupy a segregated library in order to read.
- Andrei, denari, derain, draine, airned, indear, Adrien, Darién, Darien, Draine, Denair, Naderi, Dairen, rained, Raiden