: the place where a Scandinavian assembly is held.

What is a thingy in slang?

Thingy is very informal. It's especially used in speech as a way for the speaker to refer to something whose name they don't know or can't remember at that moment.

What is noun thing?

A noun is a word that refers to a thing (book), a person (Betty Crocker), an animal (cat), a place (Omaha), a quality (softness), an idea (justice), or an action (yodeling). It's usually a single word, but not always: cake, shoes, school bus, and time and a half are all nouns.