"Blend of Bri and Lynn"
The name Brilynn is commonly a female name from the "American" origin.
Brilynn is a modern American formation that combines the short name element Bri, as in Brianna or Brielle, with the ending Lynn. The first United States birth records for the spelling date to 1995, and the -lynn ending it uses appears in a number of American names coined in the late twentieth century. It is not an inherited name from an older language tradition, and no meaning beyond its two parts is recorded.
The pronunciation of Brilynn is BRY-lin.