In part of Japan, old family on holiday short of yen (7)
I believe the answer is:
okinawa
'in part of japan' is the definition.
The answer and definition can be both locations as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'old family on holiday short of yen' is the wordplay.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'family' becomes 'kin' (synonyms).
'on holiday' becomes 'away' (away from one's home).
'short of' suggests deleting specific letters.
'yen' becomes 'y' (resembles the symbol for the currency of Japan).
'away' with 'y' removed is 'awa'.
'o'+'kin'+'awa'='OKINAWA'
Can you help me to learn more?
(Other definitions for okinawa that I've seen before include "battle!" , "Japanese island, capital Naha" , "Japanese island captured by US in June nineteen forty five" , "Region of southern Japan, scene of fierce fighting in 1945" , "WW2 campaign" .)