1. the slow movement of information or resources down to lower levels of an organization or population
the filtering down of wealth/news/resources
'Filter down' is a phrasal verb meaning something that moves from the top down to lower levels of a business or organisation. When something 'filters down' it moves downwards in a slow or gradual way. To filter down can also mean to remove solids from a liquid through layers or substrate. Similar in meaning to 'funnel down'