Dream or vision
Aslyn is a modern variant of the Irish name Aislinn. It is derived from the Gaelic word 'aisling', which refers to a poetic genre developed in Irish language poetry of the late 17th and 18th centuries where Ireland appears as a beautiful woman in a dream.
Less common today
Aslyn isn't in the latest US Top 1000. It last peaked at #5,876 in 2008.
US births per 5-year period, 1990βpresent (SSA data).