tundish

A kind of funnel used in brewing fitting into the bung-hole of a tun or cask.

For filling a bottle with a Tunne-dish.

That? said Stephen. Is that called a funnel? Is it not a tundish?

A funnel used in smelting, foundry work etc.

A funnel used to create a siphonic break in a drainage system and/or provide visual indication of flow, usually in an overflow line.