In airsoft, refers to a group of people playing together of which some or all of the group is using night vision scopes or goggles, IR scopes or goggles, thermal imaging scopes or goggles, or any combination thereof.

Because of the high cost relative to other pieces of gear, night vision is not commonly seen at airsoft skirmishes but is much more common at national events where the game will continue until much later or through the entire night. NOD Squads can be viewed by some players as having an unfair advantage because the price can be almost exponentially higher compared to other airsoft gear, be it real issued or Chinese copies.

The term is coined from combining NOD, one of the abbreviations of night vision standing for Night Optical/Observation Device, and squad, which is a group of soldiers usually no more than 12 in number. This such for the alliterative consonance, as NVG (night vision goggles) and NVD (night vision device) do not have vowels to be pronounced similarly to words.
Player 1: "Is our team doing the night game?"
Player 2: "Not tonight, look at all of the NOD Squads getting geared up in the parking lot."
by The Gun Gamer May 4, 2018
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n. a tilt of the head by one gay to another in a crowd of straight people.
Chance knew from far across the crowded room that Tyler was gay. Chance cocked his head to one side and Tyler responded with a nod of acknowledgement.
by Richard Black October 19, 2005
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The unexpected approval or recognition given to someone perceived to be doing something who is in actual fact doing something else, and there is no opportunity to explain.

To get the Lesbian Nod, to be given a Lesbian Nod, to give a Lesbian Nod to someone.
Holding the hand of your same-sex blind/disabled friend to guide them in the street is what you're actually doing, but people in the street give you recognition for being "out and proud".

Usage: "I got the Lesbian Nod today for chasing a purse-snatcher, when actually I was running after a bus."

Putting a War and Peace dustjacket on your copy of Twilight and reading it in public is not an action meriting a lesbian nod - the confusion must be genuinely accidental.
by frenchknickers April 21, 2009
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The act of lowering and raising one's head slightly and briefly, in acknowledgment that you work for the flagship office of the state.
“So they saw that the crash was south of the river and they didn’t even stop. They just gave me the North Sac Nod and took off.”
by ElConductor July 14, 2018
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When someone doesn’t want to talk to you so they just “silent nod” and look away
Colton totally silent nodded me at National Convention.
by Chickenlegsyessssss October 25, 2017
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Anytime you are in public, wearing a boston red sox hat, and come across another person in a red sox hat. If the two of you are true fans of the team, you will exchange a nod.

This is a good way to distinguish between full-blown die hards and the post-2004 bandwagon fans.
Guy 1: "Did you know that guy?"

Guy 2: "No but he was wearing a Red Sox hat like me, so I had to throw him the Red Sox Nod.
by Cory! August 31, 2007
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the inherited instinct to nod your head at people; if you know them or not, and it takes no thought process for initiation or to respond. mostly like predominate in caucasian males, but stretches every ethnic back round in the united states. IRN for short. it's a non verbal way to say i see you there, or to recognize what is going on in a particular environment.
bicyclist and driver give a impulsive recognition nod at one another as to agree not to collide with one another.

male friend see's another male friend having a conversation with a female and gives the impulsive recognition nod as to non verbally communicate a variety of things such as; leave me alone, find your own ride home tonight, yes am trying to have sex with this individual, good luck etc.

you catch a person looking at you and that individual gives a impulsive recognition nod, and nod back but don't know why. this prevents any unnecessary altercation due to the IRN
by Fainezilla April 30, 2011
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