The crossword solution for the term PART CRIB is SLAT, which is a four-letter word. A SLAT is a thin strip of wood or metal used in a variety of applications, such as in a crib. Slats are often used to form the sides and base of a crib, providing support and stability for the mattress and bedding. Slats also provide ventilation, allowing air to circulate around the mattress and bedding, helping to keep the baby cool and comfortable.