"Blend of Kash and Lynn"
The name Kashlynn is commonly a female name from the "American" origin.
Kashlynn is a modern American formation best explained as the element Kash joined to the -lynn ending found in many American girls' names, such as Kaylynn and Ashlynn. The first element corresponds to the given name and surname Kash, also spelled Cash. The name does not appear in United States birth records before 2004, which fits a recent coinage rather than an inherited name.
The pronunciation of Kashlynn is KASH-lin.