to poke (somebody) gently with one's elbow, esp to draw their attention to something
to push (something) gently
She felt the dog's nose nudging her hand
to move (something) slightly in a certain direction
Yearly profits had been nudged over the million mark
to encourage (somebody) gently to do something by hints and reminders
nudge them towards giving us a loan
nudge nudge
informal interjected to add salacious suggestiveness to one's words
Yer average gig-goer is still stuck in the ‘wink wink, nudge nudge’ mentality of the ’70s — New Musical Express
nudger noun
[prob of Scandinavian origin]