Food, right on the seaside (4)
I believe the answer is:
pier
'the seaside' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'food right on' is the wordplay.
'food' becomes 'pie' (pie is a kind of food).
'right' becomes 'R' (common abbreviation).
'on' says to put letters next to each other.
'pie'+'r'='PIER'
Can you help me to learn more?
(Other definitions for pier that I've seen before include "Seaside resort feature" , "Buttress; landing place" , "Quay" , "One jutting into sea" , "Seaside attraction" .)