Green’s Dictionary of Slang

cheeri phr.

[abbr. of colloq. cheerio, goodbye]

(N.Z.) goodbye.

1959		G. Slatter Gun in My Hand 152: ‘Cheeri,’ he calls.
1988		McGill Dict. of Kiwi Sl. 26/2: cheeri! cheerio, c.1930.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].