Many may be left somewhere in South Holland (5)
I believe the answer is:
delft
'somewhere in south holland' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'many may be left' is the wordplay.
'many' becomes 'd'.
'may be' indicates anagramming the letters.
'left' is an anagram of 'elft'.
'd'+'elft'='DELFT'
Can you help me to learn more?
(Other definitions for delft that I've seen before include "crockery pieces" , "Netherlands town famed for pottery" , "Dutch blue/white glazed earthenware" , "City in the Netherlands" , "Style of earthenware" .)