tundish
/ˈtʌn.dɪʃ/noun
High School
1
A kind of funnel used in brewing fitting into the bung-hole of a tun or cask.
2
A funnel used in smelting, foundry work etc.
3
A funnel used to create a siphonic break in a drainage system and/or provide visual indication of flow, usually in an overflow line.