cheerio

[cheer-ee-oh, cheer-ee-oh] /ˈtʃɪər iˌoʊ, ˌtʃɪər iˈoʊ/
interjection
1.
good-bye; good-bye and good luck.
2.
(used as a toast to one's drinking companions.)
noun, plural cheerios.
3.
a good-bye or farewell.
4.
a toast of “cheerio!”.
Origin
1905-10; see cheero; source of -i- is unclear
British Dictionary definitions for cheerio

cheerio

/ˌtʃɪərɪˈəʊ/
sentence substitute (informal, mainly Brit)
1.
a farewell greeting
2.
a drinking toast
noun
3.
(NZ) a type of small sausage
Word Origin and History for cheerio

upbeat parting exclamation, British, 1910, from cheer.

Slang definitions & phrases for cheerio

cheerio

interjection

Good-bye •Used as a conscious amusing Briticism: Cheerio, pip-pip, and all that! (1910+)