Rather gloomy beauty hugging chest (7)
I believe the answer is:
darkish
'rather gloomy' is the definition.
I can't tell whether this definition defines the answer.
'beauty hugging chest' is the wordplay.
'beauty' becomes 'dish' (slang term for an attractive person).
'hugging' indicates putting letters inside (outside letters hug or embrace inside letters).
'chest' becomes 'ark' (historical term for a chest).
'dish' going around 'ark' is 'DARKISH'.
Can you help me to learn more?
(Other definitions for darkish that I've seen before include "not light" , "Rash kid (anag)" .)