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 December 18, 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 23, 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 1, 2016

by AlphaJerkins August 2, 2016

imagine someone signaling you from far away, you understand what they want and give a "nod of acknowledgement" to show them that you understood.
John gave me the signal to push Bob into the pool, i gave him a nod of acknowledgement and proceeded to do so.
by Dickbutt666 July 18, 2016
