Beaker designed for every publican (9)
I believe the answer is:
barkeeper
'publican' is the definition.
(thesaurus)
'beaker designed for every' is the wordplay.
'designed for' indicates anagramming the letters (letters re-designed).
'every' becomes 'per' ('per' means 'for each' or 'for every').
'beaker' is an anagram of 'barkee'.
'barkee'+'per'='BARKEEPER'
(Other definitions for barkeeper that I've seen before include "host" , "American barman" , "One who mixes and serves alcoholic drinks - per beaker (anag)" .)