Clothing line worn by a lover troubled by son (8)
I believe the answer is:
overalls
'clothing' is the definition.
(type of clothing)
'line worn by a lover troubled by son' is the wordplay.
'line' becomes 'l' (used when specifying particular lines from a poem).
'worn by' indicates putting letters inside (outside letters are worn by those on the inside).
'troubled' indicates anagramming the letters.
'by' says to put letters next to each other.
'son' becomes 's' (genealogical abbreviation for son).
'a'+'lover'='alover'
'alover' with letters rearranged gives 'overal'.
'overal'+'s'='overals'
'l' put inside 'overals' is 'OVERALLS'.
(Other definitions for overalls that I've seen before include "Dungarees" , "Protective wear" , "Boiler suits" , "Boilersuits" , "Protective garment" .)