Dream or vision
Aslynn is a modern phonetic variant of the Irish name Aislinn. It derives from the Irish word 'aisling', referring to a poetic genre from the 17th and 18th centuries where a woman appears in a dream to represent the spirit of Ireland.
Less common today
Aslynn isn't in the latest US Top 1000. It last peaked at #5,852 in 2011.
US births per 5-year period, 1990βpresent (SSA data).