Is left with son for Christmas and Easter, say (7)
I believe the answer is:
islands
'christmas and easter say' is the definition.
I can't judge whether this definition defines the answer.
'is left with son' is the wordplay.
'left' becomes 'l' (common abbreviation).
'with' becomes 'and'.
'son' becomes 's' (genealogical abbreviation for son).
'is'+'l'+'and'+'s'='ISLANDS'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for islands that I've seen before include "Sin, lads, you're surrounded by water" , "Eg, archipelago" , "Eg The Balearics" , "Christmas and Easter are these" , "Falkland" .)