Free man and lake
A modern American compound name combining Kari, a Scandinavian diminutive of Katherine or a Germanic form of Charles, with the popular suffix Lynn. It blends the meaning of 'free man' from its Germanic roots with the Welsh 'llyn' meaning lake.
Less common today
Karilynn isn't in the latest US Top 1000. It last peaked at #8,086 in 1990.
US births per 5-year period, 1990βpresent (SSA data).