Slat/slæt/ Definition 1 of 2Pro Tip 1/3Construction Context Most commonly found in construction settings and home furnishings. The workers used strong slats to support the new staircase. Pro Tip 2/3Physical Appearance Visualize slats as typically long, narrow, and flat pieces. The bench was uncomfortable because the slats were too far apart. Pro Tip 3/3Functional Purpose Slats provide support and structure, while allowing space or light through. The slats on the crib were spaced to ensure the baby's safety.