Noble or of noble birth
Addilyne is a modern American spelling variation of Adeline. It ultimately derives from the Germanic element 'adal', which was a common prefix in medieval names to denote high social standing or nobility.
Less common today
Addilyne isn't in the latest US Top 1000. It last peaked at #8,813 in 2016.
US births per 5-year period, 1990βpresent (SSA data).