There are 2 main definitions of trickle down in English:

trickle down1

(Of wealth) gradually benefit the poorest as a result of the increasing wealth of the richest.
More example sentences
  • No longer applicable, then, is the old theory of material benefits trickling down to the poor as the economy flies.
  • There is also some debate regarding the benefits of the reforms trickling down to the lowest strata of Indian society.
  • Anything which trickles down wealth from board room to the worker must be applauded, as indeed must any scheme which encourages prudent investing and enables people to save tax.
See parent entry: trickle

Definition of trickle down in:

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There are 2 main definitions of trickle down in English:

trickle-down2

Line breaks: trickle-down
Pronunciation: /ˈtrɪk(ə)ldʌʊn
 
/

noun

[usually as modifier]
The theory that the poorest in society gradually benefit as a result of the increasing wealth of the richest: the trickle-down effect
More example sentences
  • Before Howard started using the phrase, people who had not reaped the benefits of the trickle-down effect wouldn't have cited this elite as a group they resented.
  • Under the open-source model, scientists are free to modify the control software, creating a trickle-down effect that benefits amateurs.
  • He has a regular housekeeper, whose family thus benefits from the trickle-down effect.

Definition of trickle down in: