Noble
Adelie is a French diminutive form of Adèle, which ultimately derives from the Germanic element 'adal' meaning noble. It is most famously associated with the Adélie penguin, named by French explorer Jules Dumont d'Urville after his wife, Adèle.
Less common today
Adelie isn't in the latest US Top 1000. It last peaked at #3,214 in 2013.
US births per 5-year period, 1990–present (SSA data).
Wife of French explorer Jules Dumont d'Urville, for whom the Adélie Coast and penguin are named