Lewis & Short

quinquĕvir (V.), i, m., usu. in plur.: quinquĕ-vĭri, ōrum, m. [vir], board of five, the quinquevirs, a board or commission of five men for any official function. Thus, five commissioners,

    1. 1. For the apportionment of lands, Cic. Agr. 2, 7, 7: quinqueviros Pomptino agro dividendo creaverunt, Liv. 6, 21, 4.
    2. 2. For regulating indebtedness (quinqueviri mensarii), Liv. 7, 21, 5.
    3. 3. For repairing walls and towers, Liv. 25, 7, 5.
    4. 4. As assistants to the tresviri for the watch by night, Liv. 39, 14; Dig. 1, 2, 2, § 31 al.
    5. 5. Under the emperors, a commission to control the public expenditures: collegium quinquevirorum publicis sumptibus minuendis, Plin. Ep. 2, 1, 9.
      In sing., a member of the board of five, a quinquevir: quinquevir, Cic. Ac. 2, 44, 136: scriba ex quinqueviro, Hor. S. 2, 5, 56.