Man from Lucania; light
Lukis is a rare phonetic variant of Lucas or Lucius. It ultimately derives from the Latin name Lucanus, referring to a person from Lucania, an ancient region in Southern Italy. The root is associated with the Latin word 'lux', meaning light.
Less common today
Lukis isn't in the latest US Top 1000. It last peaked at #5,222 in 2012.
US births per 5-year period, 1990βpresent (SSA data).