nighttime diaper

Noun

nighttime diaper (plural nighttime diapers)

1. (Canada, US) An extra-bulky and absorbent diaper which is intended to be worn during sleep for prolonged wetting, usually by an infant who is a heavy wetter, or by someone with urinary incontinence.
   • Old flannel receiving blankets are useful as nighttime diapers for Baby, being soft and so absorbent.1966 January 16, “Soft Diapers”, in El Paso Times, page 4-C
   • Half an hour into the movie Adam fell asleep. By the time we got out, it was eleven-thirty. Either Lara was asleep or else she was faking it. I put Adam in a nighttime diaper, put him in his crib, then quietly slipped into bed.1981, Jack Weyland, Sam, Deseret Book Company, →ISBN, page 144
2. (Canada, US) A diaper or training pants intended to be worn during sleep to prevent bedwetting, often by young children.
   • Since most children will sty dry in the day some months before they begin staying dry all night, it seems sensible to wait until they are dry during the day before abandoning their nighttime diapers.1967 October 10, William G. Crook, “The Length of Diaper Time Varies”, in San Francisco Examiner, page 26
   • If the child continues to show both difficult behavior and a return to wet diapers, use a nighttime diaper again. Explain that "big children" often wear night diapers so they can sleep well all through the night.1989, Robert Schachter, When Your Child is Afraid, Touchstone Books, →ISBN, page 82