Hyde Park Baby Buggy is a term used to describe a PRAM, which is a four-wheeled carriage designed to transport infants and young children. It is typically pushed by an adult and has a hood or canopy to protect the child from the elements. The term 'Hyde Park Baby Buggy' originated in London, England, where it was popularized in the late 19th century. It was named after Hyde Park, one of the largest parks in London, where many people would take their children for a stroll in their prams. Today, the term is still used to refer to any type of PRAM, regardless of its origin.