Wordnet 3.0
NOUN (1)
1.
a hospital ward that provides care for women during pregnancy and childbirth and for newborn infants;
The Collaborative International Dictionary of English v.0.48:
maternity ward \ma*ter"ni*ty ward`\, n.
The section of a hospital devoted to assisting women during
childbirth and caring for them and their newborn infants
until they are released to go home.
[PJC]
WordNet (r) 3.0 (2006):
maternity ward
n 1: a hospital ward that provides care for women during
pregnancy and childbirth and for newborn infants