samizdat
The secret copying and sharing of illegal publications, chiefly in the Soviet Union; underground publishing and its publications.
uncountable
From a clandestine network of friends passing to each other typed copies of their new work, the initiative developed over the years into a parallel publishing system. […] [I]n cities the inquisitive reader did not have much difficulty in obtaining access to what was in fact a banned literature. Samizdat was also an important source of new writing for the equally active and enterprising publishers of Czech (and some Slovak) books in exile.
A samizdat publication.
countable
In Poland, some samizdats are different: they are professionally produced and are sold for money. But the money that these Polish consumers pay for these illegal samizdats is not dissipated in the domain of individual or corporate profits, nor does it help support the government and its publishing monopoly. The money acquired through sales is used for – and this the consumer is well aware of – the advancement of the Solidarity movement.
Where it comes from
Borrowed from Russian самизда́т (samizdát, “self-publishing”), from сам (sam, “self”) + изда́т (izdát), an abbreviation of изда́тельство (izdátelʹstvo, “publishing house, publishing”) (compare Russian Госизда́т (Gosizdát, “State Publisher”)).
Adapted from the Wiktionary entry samizdat (CC BY-SA 4.0).