Definition of funnel noun from the Oxford Advanced Learner's Dictionary

funnel

noun
ˈfʌnl
 
; ˈfʌnl
 
 
1 a device that is wide at the top and narrow at the bottom, used for pouring liquids or powders into a small opening2 (British English) (also smokestack North American English, British English) a metal chimney, for example on a ship or an engine, through which smoke comes out