The crossword solution for the term 'SEESAW SITTER OF SONG' is 'ESAU', which is a four-letter word. Esau was the twin brother of Jacob in the Bible, and was known for his hunting skills. He is also mentioned in the book of Genesis as the son of Isaac and Rebekah. In the Bible, Esau is portrayed as a man who was willing to give up his birthright for a bowl of stew. He is also known for his song, which is referenced in the term 'seesaw sitter of song'.