Pinched glove: let off (5)
I believe the answer is:
gaunt
'pinched' is the definition.
(I know that pinched can be written as gaunt)
I don't understand how the remainder of the clue works.
(Other definitions for gaunt that I've seen before include "Bleak" , "Wasted" , "Lean and haggard" , "Very thin, cadaverous" , "Very slight" .)