In many baby-shower traditions, the word “shower” metaphorically describes gifts.
The image is of the expectant parent being showered with presents, good wishes, and attention before the baby’s arrival. A typical shower may include practical supplies such as clothing, diapers, feeding equipment, bedding, and nursery items, although modern celebrations vary widely.
The word does not mean that guests literally shower the parent with water. Baby showers developed from earlier gift-giving and social customs, and the modern event became especially established in the United States during the twentieth century. Some celebrations now emphasize shared meals, advice, charitable donations, or practical assistance rather than a large quantity of presents.