"Blend of Zay and Lynn"
The name Zaylyn is commonly a unisex name from the "American" origin.
Zaylyn is a modern American formation built from the element Zay, as seen in Zayden and Zaylee, and the suffix -lyn, as in Jaylyn and Braelyn. It first appears in United States birth records in 2007, which fits a recent combination of name parts rather than an inherited name. No meaning is attached to either element here.
The pronunciation of Zaylyn is ZAY-lin.