Pure Charlie swallowed, about to bring up bile (8)
I believe the answer is:
celibate
'pure' is the definition.
(thesaurus)
'charlie swallowed about to bring up bile' is the wordplay.
'charlie' becomes 'c' (phonetic alphabet: alpha, bravo, charlie etc.).
'swallowed' becomes 'ate'.
'about' says to put letters next to each other.
'to bring up' is a reversal indicator.
'bile' written backwards gives 'elib'.
'ate' after 'elib' is 'elibate'.
'c'+'elibate'='CELIBATE'
(Other definitions for celibate that I've seen before include "Abstaining in the bedroom" , "Remaining chaste for religious reasons." , "Unmarried (person)" , "Not married" , "Continent" .)