This has also been spoken as the "guy nod" due to the fact that only guys seem to be the ones that do this, and at ages from middle school on up.
Nod of acknowledgement can be seen when walking through the halls of a school, I guy sees a girl that he knows, and gives her the guy nod to acknowledge the fact that he sees her, but not to draw too much attention to either himself or the situation that's occuring
by Bofo November 11, 2005
When someone you're interested in makes it clear that they are with someone else through affectionate public gestures.
I was flirting with him until he gave the girl who walked up to us public acknowledgement, and then I backed off.
by don'tWaitUp June 5, 2010
I usually refer to this as the "Man Nod", since it is generally used by Men with Men. I find the nod is used most often when signalling hello to an oncoming car on a lonely country road, when communicating a silent hello to a male pedestrian from a car, or in any situation where one man wants to acknowledge another man with respect non-audibly. In the case of car-on-car nodding, sometimes lifting 1 finger up to say "Hi" from the wheel often suffices too.
Driving on a desolate country road without seeing anyone for hours, I gave the only driver that passed the 'nod of acknowledgement {man nod}' as he passed and he did the same right back.
by Evan Winston October 19, 2005
It's the same thing as the nod of acknowledgement. but instead of nodding, you point with your index finger.
by Dan October 20, 2005
by angelica11 August 2, 2016
When your homeboy looks at you from across the club. Just the eye contact is enough to ask "should I smash this chick I'm dancing with". With out saying a word you nod your head down for yes.
Timmy was dancing with a smoking hot white chick at the club yesterday. He looked at me and I gave him the nod of acknowledgement to smash her.
by TinyTittiesTammy July 31, 2016
by AlphaJerkins August 2, 2016