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 WordNet 3.0 & Open English WordNet

A doula is a trained professional who provides expert guidance for the service of others and who supports another person through a significant health-related experience, such as childbirth, miscarriage, induced abortion or stillbirth, as well as non-reproductive experiences such as dying. Wikipedia

Assistant providing non-medical support during and after childbirth. Wikipedia Disambiguation

Non-medical professional that emotionally and practically supports women in preparation for birth, during labor and post-nataly Wikidata

A support person, usually female, who may not have medical or midwifery training, who provides emotional and practical assistance to a pregnant mother or couple before, during or after childbirth. Wiktionary

Support person. Wiktionary (translation)

Doula (one who provides support during pregnancy and childbirth). Wiktionary