Eyleen is of American origin, derived from the English name Aileen. It's composed of two elements: 'a' meaning 'noble', and 'leann' which denotes 'clear'. The name gained popularity in the United States during the mid-20th century but has since become less common. Eyleen is typically pronounced /EYE-leen/.
"Eyleen appears to have gained popularity as a baby girl name from the late 1990s onwards, with a significant increase in usage between 2006 and 2014, peaking at 23 births in 2021. However, it seems to have had some periods of low popularity throughout the 20th century, with no recorded births from 1925 to 1969."