The term 'baby vehicle' can be summarized by the crossword solution 'PRAM'. A PRAM is a type of baby carriage, typically with four wheels and a hood or canopy, used to transport infants and young children. It is also known as a stroller, buggy, or pushchair. Prams are designed to provide a comfortable and safe ride for babies and toddlers, and are often equipped with features such as adjustable handles, reclining seats, and storage baskets.