We don't have synonyms for sea-pie yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are sea pie.
(n) :
Alternative form of sea pie (“food”). [A dish of crust or pastry with meat or fish, etc., cooked together in alternate layers, once a common food of sailors.]
(n) :
Alternative form of sea pie (“bird”). [A dish of crust or pastry with meat or fish, etc., cooked together in alternate layers, once a common food of sailors.]
(n) :
Alternative form of sea pie (“food”). [A dish of crust or pastry with meat or fish, etc., cooked together in alternate layers, once a common food of sailors.]
(n) :
Alternative form of sea pie (“bird”). [A dish of crust or pastry with meat or fish, etc., cooked together in alternate layers, once a common food of sailors.]