Definition of unstock:
(v) :
(transitive) To remove the stock (store or supply) from; to empty of goods.
(v) :
(transitive) To remove the stock (block or support) from; to release from that which fixes in place.
(v) :
(transitive) To remove (a ship etc.) from the stocks.
(v) :
(figurative) To free up or release.
(adj) :
Not ordinary, basic, or cliché; atypical.