Closing or locking
Neilah is a name of Hebrew origin, specifically referring to the 'closing' or 'locking' ceremony that concludes Yom Kippur, the Day of Atonement. It represents the final opportunity for prayer and repentance before the symbolic gates of heaven are closed. As a given name, it carries a sense of spiritual completion and solemnity.
Less common today
Neilah isn't in the latest US Top 1000. It last peaked at #11,145 in 2010.
US births per 5-year period, 1990βpresent (SSA data).