Base removed from article in golf bag (5)
I believe the answer is:
thing
'bag' is the definition.
(thesaurus)
'base removed from article in golf' is the wordplay.
'base' becomes 'e' (Euler's number - base of natural logarithms).
'removed from' suggests deleting specific letters.
'article' becomes 'the' (the definite article).
'in golf' becomes 'ing' (I can't explain this - if you can you should give a lot more credence to this answer).
'the' with 'e' taken out is 'th'.
'th'+'ing'='THING'
Can you help me to learn more?
(Other definitions for thing that I've seen before include "A creature" , "cup of tea" , "Individual unit" , "Affair - matter" , "Article" .)