Kahil /ka-hil/ [2 sylls.] as a boys' name is of Arabic origin, and the name Kahil means friend. Kahil is a variant transcription of Kalil (Arabic): poet Kahlil Gibran. Compare last name Kahill.Kreatif forms: Kehil, Khahil, Kohil.2000 U.S. Census). Below is a graphed analysis of the popularity of Kahil and corresponding names. Prominent varying forms of Kahil (outside Top 1000) rated in the Top 1000 are Khalil (#465 last year) and Kahlil.