Arm supporting baby that regularly signals distress (6,3)
I believe the answer is:
minute gun
'arm supporting baby that regularly signals distress' is the definition.
'minute gun' can be an answer for 'arm' (minute gun is a kind of arm). I am unsure of the remainder of the definition.
'arm supporting baby' is the wordplay.
'arm' becomes 'gun' (gun is a kind of arm).
'supporting' means one lot of letters go next to another (in a down clue, some letters go below others).
'baby' becomes 'minute' (I can't explain this - if you can you should believe this answer much more).
'gun' after 'minute' is 'MINUTE-GUN'.
Can you help me to learn more?
(Other definitions for minute gun that I've seen before include "distress signal?" , "heard at funerals?" .)