the.com/baby shower

means A pre-birth celebration where friends and family gather to give gifts and supplies to parents expecting a child.

from The exact origin is debated. One common story credits an ancient Egyptian or Victorian practice of gift-giving for new mothers, but there's no solid evidence for a single clean origin story. What's documented is that the term and modern custom solidified in the United States around the mid-20th century, with 'shower' referring to the idea of showering the parents-to-be with gifts — a metaphor built on an earlier, more general use of 'shower' to mean a bestowing of many things at once, as in a 'shower of praise' or 'shower of blessings.'