sandbox tree

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

See sandbox tree in American Heritage Dictionary 4

noun
A tropical American tree (Hura crepitans) having an irritating milky juice, a spiny trunk, and large woody seed capsules that split explosively when ripe.

Origin:

Origin: So called because the capsules were formerly used to hold sand for drying ink

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