hob and nob I. \|häbə(n)|näb\interjection Etymology: probably alteration of earlier hob or nob, alteration of hab or nab — more at habnab archaic — used as an informal toast in convivial drinking II. adverb (or adjective) alsohob a nob\“\ archaic: in a close and friendly relationship : in a warmly companionable relationship III. orhob-a-nob\“\ archaic variant of hobnob I