trickle-downBrE /ˈtrɪkl daʊn/ 🔊NAmE /ˈtrɪkl daʊn/ 🔊 noun [uncountable] the theory that if the richest people in society become richer, this will have a good effect on poorer people as well, for example by creating more jobs 下层受惠论，涓滴理论（富人愈富应能惠及穷人）