The Japanese symbol ⊡ has the code U+22A1, and its description is dot in square.
[['[TABLECONTEXT]', 'SYMBOL', '⊡'], ['⊡', 'DESCRIPTION', 'Dot in square'], ['⊡', 'UNICODE', 'U+22A1'], ['[TABLECONTEXT]', '[TITLE]', 'Japanese map symbols']]