calabash n.

"dried, hollowed gourd used as a drinking cup," 1650s, callebass, from Spanish calabaza, possibly from Arabic qar'a yabisa "dry gourd," from Persian kharabuz, used of various large melons; or from a pre-Roman Iberian *calapaccia. As "the fruit of the calabash tree" (from which the cups were made) from 1590s.