clothes consisting of long, narrow strips of cloth for swaddling an infant. · long garments for an infant. · the period of infancy or immaturity, as of a person, or incipience, as of a thing: Nuclear energy is still in its swaddling clothes. · rigid supervision or restriction of actions or movements, as of the immature:Also called ... Found on https://www.infoplease.com/dictionary/swaddling-clothes