Definition of "winkie"

In 2005, a forum-goer named Nathan Poe pronounced one of the most quintessential Internet laws: Without a winkie or other “blatant display of humor,” parodies of extreme views can’t be distinguished from the genuine article.

2015 October 20, Caitlin Dewey, “A YouTube video claims ‘Back to the Future’ predicted 9/11 — and that isn’t even the weird part”, in The Washington Post‎

After telling this story Andy stood up and held his penis saying that he would put a pin in his winkie, then changed his mind...

1966, John Bolland, Joseph Sandler, The Hampstead Psychoanalytic Index

He certainly has a big crush on his own dick. It's a good one, but I can tell he really enjoys looking at his own body and his winkie in action.

1996, David Leddick, My Worst Date

Seems he liked to wave his winkie at schoolkids. Worse yet, he'd recently done nineteen months at the Twin Rivers Correctional Facility...

2002, G M Ford, Fury