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.
US births per 5-year period, 1990–present (SSA data).