Grumpy Londoner hides artificial leg (5)
I believe the answer is:
pylon
'artificial leg' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'grumpy londoner hides' is the wordplay.
'hides' says the answer is hidden in the clue.
'PYLON' is hidden in the letters of 'grumpy londoner'.
Can you help me to learn more?
(Other definitions for pylon that I've seen before include "Support for cables" , "current supporter" , "It marks turning point in a race" , "Metal structure for carrying overhead cables" , "Tower supporting power lines" .)