The only military caste of Kerala. They are Vratya Kshatriyas with descent from Nagavansh (The lineage of Nāgas mentioned in Puranas).

They were matrilineal by descent but patriarchal in nature.

They are the rare carriers of U1 mtDNA haplogroup in India.
Most kingdoms in Kerala which popped up after Cheras, were created by Nairs.
Eg:

Man 1: Who is that warrior who defeated Tipu Sultan

Man 2: He is V.P.Pillai , a brave man of Nair caste
by Rajanyonic July 6, 2023
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when said with a southern accent, it sounds like 'nigger'
Get Those GodDAMN NAIRS!
by Rammsteinick January 20, 2005
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The most disgusting, jaw dropping , horrible , flabbergatsing video of a man showing his asshole for a YouTube video on how to remove butt hairs with Nair.
Courtreezy Fan no.1 - "Courtney you should watch the nair video"

Courtreezy - "is it this one?"

Courtreezy- AAAAHHHHHH HE. JUST SHOWED HIS BOOTYHOLE
by AqyisS July 8, 2023
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(phrase}
Urban slang to express that you don't have any of a particular item. You don't even have close to one of the items in question.
Teacher: Lamont, you got a pencil?
Lamont: No mam, I ain't got nair-one.
by cardopolis July 7, 2005
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Something that can be used only in the air, and is bigger than my ego.
person 1: Shulk nair is way too big.

person 2: at least it can't 2 frame or reach the top platform.
by 9dohead March 24, 2021
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