The Collaborative International Dictionary of English v.0.48:

Midwife \Mid"wife`\, v. t.
   To assist in childbirth.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Midwife \Mid"wife`\, v. i.
   To perform the office of midwife.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Midwife \Mid"wife`\, n.; pl. Midwives. [OE. midwif, fr. AS.
   mid with (akin to Gr. ?) + ? woman, wife. Properly, the woman
   or wife who is attendant upon a woman in childbirth. See
   Meta-, and Wife.]
   A woman who assists other women in childbirth; a female
   practitioner of the obstetric art.
   [1913 Webster]

WordNet (r) 3.0 (2006):

midwife
    n 1: a woman skilled in aiding the delivery of babies [syn:
         midwife, accoucheuse]