M-16

noun

A lightweight assault rifle, originating from the Vietnam War period.

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Meanings

nounM-16 (plural M-16s)

plural M-16s · alternative M16

  1. USA lightweight assault rifle, originating from the Vietnam War period.

    Not long after it started selling M-16s to the military, Colt began marketing the semi-automatic AR-15 to civilians.

    2017 December 14, David Heath, Elise Hansen and AJ Willingham, CNN Design: Joyce Tseng, “How an ‘ugly,’ unwanted weapon became the most popular rifle in America”, in CNN
    1 more example

    The legislation specifically bans several AR-15 style weapons by name. The weapons — semi-automatic variants of the M-4 and M-16 type weapons issued to US troops — have been used in a plethora of shootings in the past few years, including the October 27 attack on the Tree of Life synagogue.

    2018 December 17, Evan Simko-Bednarski and Taylor Romine, “Pittsburgh City Council to consider ban on assault weapons, bump stocks”, in CNN

    Synonyms: AR-15, AR

Synonyms & antonyms

nounA lightweight assault rifle, originating from the Vietnam War period.

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Cite this entry
APA

M-16. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/M-16

MLA

“M-16.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/M-16. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “M-16,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/M-16.

Source: M-16 on Wiktionary, CC BY-SA 4.0.