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1. Occasion when workers continue to work as a protest against e.g. proposed dismissal or closure of the factory

1. Add by mixing or blending on or attaching
   "work in the butter and the dough will get the right consistency"; "In his speech, the presidential candidate worked in a lot of learned words"

Derived forms: working in, work-ins, worked in, works in

Type of: add, demo [Brit], demonstration, manifestation

Encyclopedia: Work-in