Real Dictionary

sandbox tree in British English
a tropical American tree (Hura crepitans) of the spurge family, with small, woody fruit that bursts with a loud noise when ripe and scatters its seeds
noun: a tropical American euphorbiaceous tree, Hura crepitans, having small woody seed capsules, which explode when ripe to scatter the seeds: formerly used to hold sand for blotting ink
noun: a tropical American tree, Hura crepitans, of the spurge family, bearing a furrowed, roundish fruit about the size of an orange that when ripe and dry bursts with a sharp report and scatters the seeds