the change

   1. the menopause

   A shortened form of the standard English change of life:

    Too young for the change, I suppose. (J. Trollope, 1992)

   2. obsolete

   to grow into a difficult or stupid child

   Babies born wise and beautiful grew up stupid, ugly, and mischievous if the fairies did a switch in the cradle:

    My granny never liked her, said she was 'changed'. (Service, 1887)

   Thus a changeling, such a child, resulting from the malevolence of the fairies and not from incest and other inbreeding which was endemic in rural areas before the Railway Age.

   3. to replace by a clean one a soiled napkin on a baby

   The baby in fact remains unchanged, albeit cleaner and sweeter-smelling for a while:

    The baby now began to scream. 'I expect he wants changing,' said David. (N. Mitford, 1960)