Supplanter or beautiful lake
Jamilyn is a modern American blended name. It likely combines the Hebrew-derived Jamie, meaning 'supplanter', with the popular suffix -lyn, which is often associated with the Welsh word for 'lake'.
Less common today
Jamilyn isn't in the latest US Top 1000. It last peaked at #4,564 in 1991.
US births per 5-year period, 1990–present (SSA data).
