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"[Plin. Nat. 20.7] - THE GOURD: SEVENTEEN REMEDIES. THE SOMPHUS: ONE REMEDY.
There is found also a wild gourd, called “somphos” by the Greeks, empty within (to which circumstance it owes its name), and long and thick in shape, like the finger: it grows nowhere except upon stony spots. The juice of this gourd, when chewed, is very beneficial to the stomach."
(The Natural History. Pliny the Elder. John Bostock, M.D., F.R.S. H.T. Riley, Esq., B.A. London. Taylor and Francis, Red Lion Court, Fleet Street. 1855.)