deadstock

noun

1. (countable, uncountable)Merchandise that has not yielded any use yet: from the view of the businessperson, one that has failed to be sold or processed and is now stowed away for possible sale or manufacturing at a later date, from the view of the consumer, a piece that has been obtained but not found application and is now—perhaps even with original labelling or packaging—stored for future ideas.

   “No newsboy could possibly have got half way to Fairfax with any copies of the TIMES "unsold:" -- he wouldn't have had one left by the time he had crossed the Potomac, but would have fallen back on his dead stock of Tribunes and Heralds.”

   “the small space is a goldmine of never-been-worn big-name deadstock, including threads by Miu Miu, Alberta Ferretti and Stella McCartney,[…]”

2. (countable, uncountable)Agricultural implements and stored produce, distinguished from livestock.

   “[…]examining in turn, the husbandry of livestock, the consumption of domestic deadstock, and hunting in the earlier Neolithic,[…]”

   “Poultry housing is the 'dead stock' of a poultry unit and as such represents a considerable portion of the capital outlay,[…]”

verb

1. (slang, transitive)To store in appropriate packaging for later.