Machete
From Tardis Wiki, the free Doctor Who reference
A machete was a cutting tool for cutting plants such as crops. It can also be used as a weapon for melee fighting.
Styre used one in single combat with the Fourth Doctor. (The Sontaran Experiment)
Chris Cwej used one to cut open coconuts when he and the Seventh Doctor were stranded on an island. (PROSE: No Room)