A hidden cache refers to a secret storage or hiding place where valuable or important items are kept, usually known only to a select few, and not easily accessible to others. Full definition
«Variable intermittent reinforcement explains why slot machines are so enthralling, why video games contain hidden caches of coins or weapons, and why we're all helpless before our e-mail accounts,» Roberts explains, adding that «the kinds of rewards offered in online communities are particularly compelling, based on what Dan Siegel, a UCLA professor of psychiatry and executive director of the Mindsight Institute, calls contingent communication. (inc.com)
What's fun is working together to solve clues and unearth hidden caches. (verywellfamily.com)
But many governments have stockpiled vaccine in case bioterrorists get their hands on a potential hidden cache of the virus. (sciencemag.org)