funnel

Short definition from Wiktionary

Noun

1. 1
   A utensil in the shape of an inverted hollow cone terminating in a narrow pipe, for channeling liquids or granular material; typically used when transferring said substances from any container into ones with a significantly smaller opening.
2. 2
   A passage or avenue for a fluid or flowing substance; specifically, a smoke flue or pipe; the chimney of a steamship or the like.
3. 3
   Ellipsis of purchase funnel (“the process of customer acquisition conceptualized as a series of stages, from initial awareness (top) to sale or conversion (bottom)”).
4. 4
   Ellipsis of funnel cloud.
5. 5
   Alternative form of fummel (“hybrid animal”).

Verb

1. 1
   To use a funnel.
2. 2
   To proceed through a narrow gap or passageway akin to a funnel; to condense or narrow.
3. 3
   To channel, direct, or focus (emotions, money, resources, etc.).
4. 4
   To consume (beer, etc.) rapidly through a funnel, typically as a stunt at a party.