Armoured glove (8)
I believe the answer is:
gauntlet
'armoured glove' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for gauntlet that I've seen before include "Iron glove" , "Throw it down to offer a challenge" , "that may be punishing for runner" , "Glove with long sleeve, thrown down challenge" , "Stout glove" .)