Keylyn is of African-American origin, derived from the English word 'key', meaning 'lock' or 'key'. It's an androgynous name that has gained popularity in recent years, particularly in the United States. The name Keylyn suggests strength, uniqueness, and a certain keyless charm.
"The name Keylyn had a notable start with 6 babies named in 2004, peaked at 10 in 2006, and maintained steady popularity with 5 births each in 2007 and 2008. It then rose again to 9 births in 2009, resulting in a total of 35 babies named Keylyn over these six years."