Trainee hangs round hospital? That's fishy (4)
I believe the answer is:
chub
'that's fishy' is the definition.
(type of fish)
'trainee hangs round hospital?' is the wordplay.
I cannot quite understand how this works, but
'hospital?' could be 'h' (abbreviation for hospital on maps) and 'h' is located in the answer.
'trainee' could be 'cub' (I've seen this in other clues) and 'cub' is located in the leftover letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for chub that I've seen before include "Plump fish" , "Thick-bodied European fish" , "Fat relative of the carp" , "European freshwater fish" , "Small river fish of the carp family" .)