tanbark/tænˈbɑɹk/EtymologyFrom tan + bark.nounThe bark of the oak (or other trees) used as a source of tannin.The spent bark used as a ground covering.“Another circle of groats, crowning a temporary pathway of tanbark flung wide around the first two rings, provided dry footing for the rest of the guests.”Woodchips, especially when used as as a ground covering on children's playgrounds.