Lewis & Short

jānĭtrix, īcis, f. [janitor], a female door-keeper, a portress.

  1. I. Lit.: anus hic solet cubitare custos, janitrix, Plaut. Curc. 1, 1, 76.
  2. II. Transf.: laurus janitrix Caesarum, i. e. planted in front of the house, Plin. 15, 30, 39, § 127.