What does "cheerio" mean?

A small saveloy often consumed with tomato sauce at parties.

What is a synonym for "cheerio"?

Common synonyms include: adieu, adios, arrivederci, au revoir, auf wiedersehen, bye.

Pronounced //ˈt͡ʃɪəɹ.i.oʊ//.

/ˈt͡ʃɪəɹ.i.oʊ/ intj, noun, slang

intj, noun, slang ·Moderate ·College level

Noun

1
A small saveloy often consumed with tomato sauce at parties. New-Zealand
"The man who has gone around the cocktail circuit pounding cheerios to the end of time did not come in here and open his mouth once on the Bill."
2
An individual piece of the Cheerios breakfast cereal.
"A single Cheerio fell off my spoon."
3
a farewell remark wordnet

Intj

1
Goodbye, an interjection said upon parting. Commonwealth, Ireland, UK, informal
""In that case," said Archie, relieved, "cheerio, good luck, pip-pip, toodle-oo, and good-bye-ee! I'll be shifting!""
2
Hello; a greeting. rare
"Cheerio, everybody! What a delightful gathering of charming femininity!"

""In that case," said Archie, relieved, "cheerio, good luck, pip-pip, toodle-oo, and good-bye-ee! I'll be shifting!""

From cheer and/or cheery + -o.