Modern invented name, possibly meaning hill or lake
Brailyn is a contemporary American coinage, likely created by blending the popular prefix 'Brae' or 'Bray' with the suffix 'lyn'. While it lacks a singular ancient root, it is often associated with the Scottish word 'brae' meaning hillside or the Welsh 'lyn' meaning lake.
Less common today
Brailyn isn't in the latest US Top 1000. It last peaked at #2,487 in 2014.
US births per 5-year period, 1990βpresent (SSA data).