Lewis & Short

menstrŭo, āre, v. n. and a. [id.].

    1. 1. Neutr., to have a monthly term, to be men struant (post-class.): mulier menstruans, Pall. 1, 35, 3.
  • II. Act., to pollute; trop.: pannus menstruatae justitiae nostrae, polluted, Vulg. Isa. 64, 6; cf. id. Ezech. 18, 6.