Pub brawl after Welsh emptied fish cart (11)
I believe the answer is:
wheelbarrow
'cart' is the definition.
(wheelbarrow is a kind of cart)
'pub brawl after welsh emptied fish' is the wordplay.
'pub' becomes 'bar' (both are drinking establishments).
'brawl' becomes 'row' (I've seen this in another clue).
'after' means one lot of letters go next to another.
'welsh emptied fish' becomes 'wheel' (I can't explain this - if you can you should give a lot more credence to this answer).
'bar'+'row'='barrow'
'barrow' after 'wheel' is 'WHEELBARROW'.
Can you help me to learn more?
(Other definitions for wheelbarrow that I've seen before include "Gardener's carrier" , "Type of handcart" , "Gardening equipment" , "Small cart" , "Garden cart" .)