The Collaborative International Dictionary of English v.0.48:
Babyhood \Ba"by*hood\, n. The state or period of infancy. [1913 Webster]WordNet (r) 3.0 (2006):
babyhood n 1: the early stage of growth or development [syn: infancy, babyhood, early childhood] 2: the earliest state of immaturity [syn: infancy, babyhood]