Gr. Antiq. Also undecem-. [f. L. undecim eleven + vir man, after Gr. οἱ ἕνδεκα.] pl. The body of eleven magistrates in ancient Athens. Hence Undecimvirate.
1728. Chambers, Cycl., s.v., The Functions of the Undecimrviri at Athens, were much the same as those of the Prevots de Marechaussee in France.
1775. Ash, Undecemvirate..., the office or dignity of the undecemviri.