A : to cover which has a top or on the top : supply, kind, or serve as a leading for b : to produce using a attractive or protective end or remaining contact c : to resupply or refill to potential Therefore the type of roof enclosing the volume https://www.tumblr.com/waterincarton/785679582441390080/redefining-purity-water-in-gabletop-carton-for-a?source=share