funnel
noun
1. a conical shape with a wider and a narrower opening at the two ends
Definition categories: shape, cone, conoid
2. a conically shaped utensil having a narrow tube at the small end; used to channel the flow of substances into a container with a small mouth
Definition categories: man–made, utensil
3. (nautical) smokestack consisting of a shaft for ventilation or the passage of smoke (especially the smokestack of a ship)
Definition categories: man–made, smokestack, stack