noun. A funnel.

noun. A container for pouring molten metal into a mold, having holes in the bottom to prevent splashing.

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

noun. A funnel (usually) used in smelting, foundry work etc.

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

"Is that called a tundish in Ireland? asked the dean."