What is another name for a tea urn?

There isn't a single, universally accepted alternative name for a tea urn. However, depending on the context, you could use some of these terms:

Formal:

* Tea dispenser

* Hot beverage dispenser

* Hot water urn

* Silver tea urn (if it's made of silver)

Informal:

* Tea pot (although technically smaller)

* Tea kettle (although usually smaller and used for boiling water, not keeping it hot)

* Water boiler

More specific:

* Electric tea urn (if it's electrically heated)

* Stainless steel tea urn (if it's made of stainless steel)

The best alternative name will depend on the specific situation and the audience you're addressing.