To hunt; hunter
Chasyn is a modern creative spelling of the name Chasen, which is derived from the English word 'chase'. It ultimately stems from the Old French 'chacier', meaning to hunt or pursue. As a contemporary invention, it follows the trend of adding a 'y' to traditional surnames or occupational names to create a unique first name.
Less common today
Chasyn isn't in the latest US Top 1000. It last peaked at #4,492 in 2010.
US births per 5-year period, 1990βpresent (SSA data).