We don't have synonyms for sicamore yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are sycamore, sagamore and sycomore.
(n) :
Archaic form of sycamore. [(US) Any of several North American plane trees, of the genus Platanus, especially Platanus occidentalis (American sycamore), distinguished by its mottled bark which flakes off in large irregular masses.]
(n) :
Archaic form of sycamore. [(US) Any of several North American plane trees, of the genus Platanus, especially Platanus occidentalis (American sycamore), distinguished by its mottled bark which flakes off in large irregular masses.]