Night beauty or dark-haired
Leilyn is a modern creative coinage, likely a variation of the Arabic name Layla or the English name Lyla. It combines the popular 'Lei' sound with the trendy '-lyn' suffix, often associated with the meaning 'night' or 'dark beauty' due to its linguistic roots.
Less common today
Leilyn isn't in the latest US Top 1000. It last peaked at #9,383 in 2015.
US births per 5-year period, 1990βpresent (SSA data).