Dream or vision
Aislee is a modern phonetic variant of the 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.
Less common today
Aislee isn't in the latest US Top 1000. It last peaked at #7,348 in 2018.
US births per 5-year period, 1990βpresent (SSA data).