Works in Carmarthen (3)
I believe the answer is:
art
'works' is the definition.
(I've seen this before)
'in carmarthen' is the wordplay.
'in' indicates a hidden word.
'ART' can be found hidden inside 'carmarthen'.
(Other definitions for art that I've seen before include "Paintings etc." , "Work such as paintings or sculptures" , "Creative works; knack" , "Music, painting etc" , "crafty conduct" .)