Etymology

ar

A1R1

Today it means: An AR-15 personal semi-automatic rifle, M-16 assault rifle, M-4 carbine, derivative or related gun; the Armalite AR family and derivatives. Full definition →

Middle English *ar
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ar · noun1

  1. Middle English · inherited from*ar
  2. English todayar

From Middle English *ar, arres pl, from earlier *er.

ar · particle2

Spelled as if originally pronounced in a non-rhotic English variety, akin to lor and the Korean surname Park.

AR · adjective, noun, proper noun3

Abbreviation.

Etymology from Wiktionary, CC BY-SA 4.0.