Wordnet 3.0
NOUN (1)
1. 
 an assistant (often the father of the soon-to-be-born child) who provides support for a woman in labor by encouraging her to use techniques learned in childbirth-preparation classes; 
[syn: labor coach, birthing coach, doula, monitrice]
WordNet (r) 3.0 (2006):
monitrice
    n 1: an assistant (often the father of the soon-to-be-born
         child) who provides support for a woman in labor by
         encouraging her to use techniques learned in childbirth-
         preparation classes [syn: labor coach, birthing coach,
         doula, monitrice]