hobnob
Pronunciation: /ˈhɒbnɒb/
verb ( hobnobs, hobnobbing, hobnobbed)

Origin:
early 19th century (in the sense 'drink together'): from archaic hob or nob, hob and nob, probably meaning 'give and take', used by two people drinking to each other's health, from dialect hab nab 'have or not have'