Small stream or lake
A modern American elaboration of the name Brooke, which originally referred to someone living near a stream. The suffix '-lyn' adds a popular rhythmic ending, often associated with the Welsh word for lake.
Less common today
Brookelyn isn't in the latest US Top 1000. It last peaked at #1,055 in 2006.
US births per 5-year period, 1990βpresent (SSA data).