The quantity 12 is sometimes referred to as one dozen.
Dozen
See also
12, Baker's Dozen, Duodecimal, GrossExplore with Wolfram|Alpha
References
Wells, D. The Penguin Dictionary of Curious and Interesting Numbers. New York: Penguin Books, p. 86, 1986.Referenced on Wolfram|Alpha
DozenCite this as:
Weisstein, Eric W. "Dozen." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Dozen.html