Definition of duumvir
1 : one of two Roman officers or magistrates constituting a board or court
2 : one of two people jointly holding power
From the M-W Editors
Origin and Etymology of duumvir
Latin, from duum (genitive of duo two) + vir man
First Known Use: 1600
Learn More about duumvir
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Britannica.com: Encyclopedia article about duumvir
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