Beggar obtained backing - drinking time! (6)
I believe the answer is:
toerag
'beggar' is the definition.
'obtained backing drinking time' is the wordplay.
'obtained' becomes 'got' ('get' can be a synonym of 'obtain').
'backing' shows that the letters should be reversed in order.
'drinking' indicates putting letters inside.
'time' becomes 'era' (I've seen this before**).
'got' back-to-front is 'tog'.
'tog' placed around 'era' is 'TOERAG'.
(Other definitions for toerag that I've seen before include "Squirt" , "Despicable character" , "Contemptible person (colloq.)" , "Scamp" , "Despicable chap" .)