Noble
Adilyn is a modern American coinage, likely created by blending the traditional Germanic root 'Adal' (meaning noble) with the popular 'lyn' suffix. It follows the trend of names like Adeline and Madeline while offering a more contemporary phonetic spelling.
Less common today
Adilyn isn't in the latest US Top 1000. It last peaked at #1,131 in 2016.
US births per 5-year period, 1990βpresent (SSA data).