Lewis & Short

mŏdĕrāmen, ĭnis, n. [moderor], a means of managing or governing, e. g. a rudder, helm (poet. and in post-class. prose).

  1. I. Lit.
    1. A. Innixus moderamine navis, Ov. M. 15, 726; so in plur., id. ib. 3, 644.
    2. B. Management, direction, control: equorum, Ov. M. 2, 48.
  2. II. Trop.: rerum, the helm, i. e. the management of affairs, the government of the state, Ov. M. 6, 677; also, a means of moderating, mitigating, controlling: verum serenitas nostra certum moderamen invenit, Cod. Th. 11, 30, 64.