Heavenly flower or grace
Lannah is a modern variation of Lana or Alannah. It is often associated with the Hawaiian word for 'heavenly flower' or the Gaelic 'beauty' and 'serenity'. In some contexts, it is also viewed as a diminutive of Alannah, meaning 'precious child'.
Less common today
Lannah isn't in the latest US Top 1000. It last peaked at #7,380 in 2005.
US births per 5-year period, 1990βpresent (SSA data).