The name Adelyn is a girl's name of French origin meaning "noble, nobility". Adelyn is ranked #203 on our popularity charts and is often added to lists like Girl Names Ending in Lyn and discussed in our forums with posts like "This or That?------------girls!".
From the experts:
Adeline in all its forms, including Adelyn, is rocketing up the list, but we do prefer the original to the variations. Or you might consider varying it yet further to Adelia, Adele, or Adelaide. Or lengthen it to Madeline/Madelyn.