Samizdat

noun

a system in the Union of Soviet Socialist Republics and countries within its orbit by which government-suppressed literature was clandestinely printed and distributed; also:  such literature

(source- Merriam-Webster)

I found this word in the reading “Now In Production” by Andrew Blauvelt and Ellen Lupton. The word is found in this sentence, “During the same year that Clowes published his seminal work of cultural samizdat, a major point of passage occurred in the field of graphic design.” Without knowing the definition of this word, I couldn’t understand what that major point is. But now I understand that it means the clandestine copying and distribution of literature.