1. (Aus.) syphilis.
|‘Beaufort’ in Mess Songs & Rhymes of the RAAF 29: He must have been riddled with sypho or gonna.|
|(con. 1941) Twenty Thousand Thieves 99: The joker who owns this has sypho. D’yer mind?|
2. (US gay) a syphilitic.
|Queens’ Vernacular 206: syph-o a syphilitic.|