Skill rising when probing revolting part of plumbing (1-4)
I believe the answer is:
u-trap
'plumbing' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'skill rising when probing revolting' is the wordplay.
'skill' becomes 'art' (both can mean a talent).
'rising' shows that the letters should be reversed in order (in a down clue, letters go up).
'when probing' means one lot of letters goes inside another (to probe can mean to poke or prod into something).
'revolting' becomes 'up' (rising up or revolting).
'art' written backwards gives 'tra'.
'tra' inserted within 'up' is 'U-TRAP'.
'part of' acts as a link.
Can you help me to learn more?
(Other definitions for u-trap that I've seen before include "Double bend in drain pipe" , "It blocks gas in pipe" , "Gas barrier in pipe" , "Sink outlet pipe" , "Pipe's gas blocker" .)