Coconut

A coconut was a type of fruit.

Among Guinea-Bissau's chief exports were coconuts. (PROSE: The Gallifrey Chronicles)

Chris Cwej used a machete to cut open coconuts when he and the Seventh Doctor were stranded on an island. (PROSE: No Room)

The First Doctor, John and Gillian drank from coconuts on an unnamed planet when they found that the oasis they encountered had dried up and that the Doctor did not bring any water with him. (COMIC: Plague of the Black Scorpi)