Heart-broken youth initially bawdy (6)
I believe the answer is:
earthy
'bawdy' is the definition.
(thesaurus)
'heart-broken youth initially' is the wordplay.
'broken' indicates anagramming the letters.
'initially' suggests taking the first letters.
The first letter of 'youth' is 'y'.
'heart' is an anagram of 'earth'.
'earth'+'y'='EARTHY'
(Other definitions for earthy that I've seen before include "Hearty and lusty" , "Lusty, coarse" , "Coarse; unsophisticated" , "Consisting of soil" , "Crude - vulgar" .)