Hall of heartache and yellow light (7)
I believe the answer is:
chamber
'light' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'hall of heartache and yellow' is the wordplay.
'hall of heartache' becomes 'ch' (I can't explain this - if you can you should believe this answer much more).
'and' says to put letters next to each other.
'yellow' becomes 'amber' (amber is a kind of yellow).
'ch'+'amber'='CHAMBER'
Can you help me to learn more?
(Other definitions for chamber that I've seen before include "A formal room as for judge" , "Room for the judge or the bed" , "Room where a judge transacts business" , "Judge's room" , "Enclosed cavity, part of gun" .)