Torch

A torch was a light source. Early torches used fire, while later ones were electric.

In 102 A.D, the Eleventh Doctor, Amy Pond and River Song used flaming torches while exploring underhenge. (TV: The Pandorica Opens) In 1963, while exploring the junkyard, Ian Chesterton used a torch, but he dropped it and lost it. (TV: "An Unearthly Child")

In Amsterdam, Colin Frazer used a torch while he and Robin Stuart made their way through Frankendael. (TV: Arc of Infinity)

Amelia Pond used a torch one night when she went outside to investigate a mysterious police box that crashed into her garden shed at Easter 1996. (TV: The Eleventh Hour)

In 2012, the Tenth Doctor carried the Olympic Torch when the original torchbearer fell and used it to light the Olympic Flame. (TV: Fear Her)

The home of Peladon's ruler was lit with torches. (TV: The Curse of Peladon, The Monster of Peladon)

On Desperus, Bors, Garge and Kirksen used torches to investigate the landing of the Spar. (TV: The Daleks' Master Plan)

In the TARDIS, during a partial blackout due to a time override, the Fifth Doctor asked Turlough to find electric torches, eventually used by them. (TV: Enlightenment)