It augments strength of pub whisky no end (7)
I believe the answer is:
barbell
'it augments strength' is the definition.
(barbells help build strength)
'pub whisky no end' is the wordplay.
'pub' becomes 'bar' (both are drinking establishments).
'whisky' becomes 'Bells' (Bell's is a brand of whisky).
'no end' means to remove the last letter.
'bells' with its last letter taken off is 'bell'.
'bar'+'bell'='BARBELL'
'of' acts as a link.
(Other definitions for barbell that I've seen before include "Weightlifting apparatus" , "equipment in gym" , "Weight lifter's equipment" , "One may be seen in a gym" , "Metal rod used in weighlifting" .)