hoarder

noun

1. One who hoards; one who accumulates, collects, and stores, especially one who does so to excess.

   “A bill to demonetize existing French gold coinage has been introduced in the Chamber of Deputies by Deputies Lenoir, Bouffandeau, and Eymond. The purpose is to force hoarders to bring out gold estimated at 4,000,000,000 francs which is still kept in hiding in spite of patriotic appeals to the owners to exchange it for notes.”

   “Like many lonely people, he was an inveterate hoarder, making and surrounding himself with objects, barriers against the demands of human intimacy.”