One doing a job on The Gloss, in manner of speaking, in hospital (8)
I believe the answer is:
polisher
'manner of speaking in hospital' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'one doing a job on the gloss' is the wordplay.
'one doing a job' becomes 'er' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'on' says to put letters next to each other.
'the gloss' becomes 'polish' ('polish' can be a synonym of 'gloss').
'er' put after 'polish' is 'POLISHER'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for polisher that I've seen before include "rubber" , "may be French" .)