Dream or vision
Ayslinn is a modern phonetic variant of the traditional Irish name Aisling. It refers to a specific genre of Irish language poetry from the late 17th century where Ireland is personified as a beautiful woman in a dream state.
Less common today
Ayslinn isn't in the latest US Top 1000. It last peaked at #9,407 in 2016.
US births per 5-year period, 1990βpresent (SSA data).