verb
trickles; trickled; trickling
[no obj]
to flow or fall in drops
always followed by an adverb or preposition :to move or go slowly in small numbers or amounts
trickle down
[phrasal verb]
to spread from the upper levels of a society, organization, etc., to the lower levels - used especially to describe the movement of money through an economic system
noun
[singular] a slow, thin flow of water
a slow movement of people or things in small numbers or amounts