Others, lamentably, extremely drunk in pub (8)
I believe the answer is:
hostelry
'pub' is the definition.
(I've seen this before)
'others lamentably extremely drunk' is the wordplay.
'extremely' suggests removing the centre (only the extremes of the word are used).
'drunk' indicates an anagram.
'lamentably' with its middle removed is 'ly'.
'others'+'ly'='othersly'
'othersly' anagrammed gives 'HOSTELRY'.
'in' is the link.
(Other definitions for hostelry that I've seen before include "Old name for inn" , "Old word for an inn" , "Shyer lot in old inn" , "Inn, lodge" , "Lodging house" .)